Private Lie Detector Test UK — Confidential from £499
Confidential P300 EEG lie detector testing for personal matters — relationship issues, family disputes, theft accusations and trust concerns. Discreet, accurate and completely confidential service across the UK.
Private Lie Detector Testing Services
Completely confidential P300 EEG lie detector testing for personal matters. 95% accuracy in a discreet, professional environment. All results are strictly confidential.
Relationship & Infidelity
Discreet testing for suspected cheating, affair verification and relationship trust issues. Professional, confidential service for sensitive personal matters.
- Suspected infidelity verification
- Dating deception detection
- Marriage counselling support
- Pre-marital honesty testing
- Complete confidentiality guaranteed
Family Dispute Resolution
Objective testing for theft accusations, inheritance disputes and trust breakdowns between family members. Clear evidence to support fair decisions.
- Theft and missing money investigations
- Inheritance dispute resolution
- Child custody support evidence
- Estate planning verification
- Anonymous testing available
Personal Theft & Safety
Testing for theft accusations, missing property and personal safety concerns. Professional investigation support for individuals facing difficult situations.
- Theft accusation resolution
- Missing property investigation
- Identity theft verification
- Stalking and harassment evidence
- Witness credibility testing
Couples Testing Package
Both partners tested on the same day to rebuild trust and verify mutual honesty. A structured, professional approach to relationship restoration.
- Both partners tested same day
- 2 complete P300 EEG tests included
- Relationship reconciliation focus
- Private consultation room
- Save £199 vs individual tests
Why Choose Us for Private Testing?
Advanced P300 EEG brain-wave technology provides superior accuracy and discretion for sensitive personal matters.
95% Accuracy
P300 EEG measures direct brain responses, providing superior accuracy compared to traditional polygraph methods.
Complete Discretion
Fully confidential service with private testing rooms and secure, encrypted handling of all personal information.
Faster Testing
The full appointment takes 45–90 minutes compared to 2–3 hours for traditional polygraph — less time, less stress.
Cannot Be Manipulated
P300 brain responses are involuntary and occur within milliseconds. No amount of preparation or countermeasures will affect the result.
Court-Ready Reports
Detailed written reports suitable for solicitor-led negotiations, mediation and formal proceedings. Expert witness support available on request.
Mobile Service
Private testing available at your home, office or a neutral venue anywhere in the UK — maximum discretion guaranteed.
No Wires. No Straps. Just a Headband.
A traditional polygraph straps sensors to your chest, fingers, and arm — measuring sweat, breathing, and blood pressure while you sit in stress. Our P300 EEG test uses a single lightweight headband that reads brain activity directly. No discomfort, no intimidation, and it's over in under 90 minutes.
Right: P300 EEG – minimal, non-invasive headband.
What You Get After Your Private Lie Detector Test
Every Private Lie Detector Test includes a detailed 8-page report — covering raw brain-wave data, P300 spike analysis, and a clear truthful or deceptive determination. Delivered within the hour. Swipe through example pages below.
Deception Score Analysis
Granular breakdown of deception scores calculated from specific neural biomarkers.
Executive Summary
Clear, definitive results indicating deception probability and overall risk assessment.
Official Certificate
Signed certification of examination suitable for legal or private verification purposes.
Raw Data Export
Full transparency with access to the raw visual data used to generate the final conclusion.
Neural Response Timeline
Millisecond-by-millisecond timeline of brain activity in response to probe stimuli.
Question Category Breakdown
Comparative analysis of responses to relevant, irrelevant, and control questions.
Cognitive Load Metrics
Analysis of response latency indicating increased cognitive load during deceptive answers.
Component Amplitude Data
Scientific validation of P300 wave amplitude and latency specific to the subject.
P300 EEG vs Polygraph — Accuracy Comparison
Independent research consistently shows P300 EEG brain-wave analysis outperforms traditional polygraph across every key measure.
Sources: Farwell & Donchin (1991), Rosenfeld et al. (2008), peer-reviewed EEG literature.
What the Readings Actually Look Like
The P300 brain-wave spike is a single, unmistakable response. Polygraph produces four overlapping signals full of noise — see why P300 EEG results are so much clearer to read.
P300 EEG — Brain Wave Response
✓ One clear spike — unambiguous result
Polygraph — 4 Overlapping Signals
✗ Noisy, subjective, open to interpretation
Illustrative waveforms based on published EEG and polygraph signal characteristics.
See Our P300 EEG Test in Action
Watch how our brain-wave lie detector technology achieves 95% accuracy. Professional deception detection across the UK.
🧠 Build Your Test Questions — Free Tool
Tell us your situation in plain English. Our AI will generate 3 professionally worded yes/no questions.
Here are your 3 suggested P300 test questions for ${area_name}:
These questions are ready to use. Book your test and we'll confirm and finalise them with you before the session.
Book My Test →Your situation is not stored or logged. This tool uses AI to suggest questions only — final questions are always confirmed with your examiner before testing.
Private Client Reviews
Real private clients who used confidential P300 EEG testing for relationship, family and personal matters.
Same‑Day Relationship Test
"I contacted Deception Detection in a state of panic over suspected cheating. Mat arranged a same‑day P300 test and walked me through everything calmly. We had clear results within half an hour of the session finishing."
Trust Rebuilt After Doubt
"Our marriage was under huge strain from ongoing accusations. The confidential P300 test gave us scientific answers in a neutral environment. It was uncomfortable emotionally but absolutely worth it for the clarity."
Discrete Family Theft Case
"Money had been going missing at home and it was tearing the family apart. The private P300 sessions were handled with real sensitivity. Results came back quickly and stopped the constant arguments."
Quiet Closure After Years
"I didn’t want a public drama, just closure. The team explained the brainwave testing clearly and kept everything confidential. Having an objective result meant I could finally move on with my life."
Dating & Online Deception
"We used the private service before taking a big step in our relationship. The P300 test around past behaviour and online contacts gave us both reassurance and a clean slate."
Anonymous Initial Contact
"I was really nervous about even making contact. Mat answered my questions without pressure and explained what was realistic. When I did book, everything from arrival to results felt private and controlled."
Support During Separation
"During a very hostile separation, the P300 test became one of the few things we both trusted. The report helped our solicitors make decisions based on evidence rather than accusations."
Teen Behaviour Concerns
"We were worried about our teenager being dishonest around drugs and money. The private P300 appointment was respectful and non‑judgemental, and the results helped us address the issue with facts."
Discreet Home Visit
"We arranged a mobile P300 test at our home so neighbours wouldn’t notice us travelling to a centre together. The examiner was professional, and everything was packed away discreetly afterwards."
Professional, Not Sensational
"I was worried it would feel like a TV show. Instead it was clinical, calm and quietly professional. The examiner focused on brain data, not drama, which is exactly what I needed."
Cleared Before the Wedding
"My fiancé suggested we both take the P300 test before getting married after a difficult conversation about our pasts. We both passed. We walked out closer than we had ever been. Best pre-wedding decision we made."
Solicitor Recommended It
"My family law solicitor specifically suggested P300 EEG testing as independent evidence for my custody case. The certified report was referenced in the hearing and the outcome went in my favour."
Anxiety Disorder — No Problem
"I have severe anxiety and was terrified a polygraph would flag me as deceptive just from nerves. The examiner explained exactly why P300 EEG is different. My anxiety had zero effect on the result. Completely cleared."
Inheritance Dispute Settled
"After our mother passed, accusations flew between siblings about the will. Rather than go to court, we all agreed to P300 testing. The results were accepted by everyone. The family is still intact."
Examiner Came to Our Office
"We needed a staff member tested discreetly over a suspected data breach. The examiner came to our office out of hours. No one else knew. The result was definitive and we handled the situation accordingly."
Three Years of Doubt — Gone
"I had been carrying suspicion about a specific incident for three years. The P300 test addressed the exact questions I needed answered. Three years of uncertainty resolved in a single afternoon."
Neutral Hotel Room Session
"Neither of us wanted the test at home. The examiner came to a hotel room we booked nearby. Completely neutral ground, no associations with either of us. The session felt calm and the result was accepted by both sides."
On Antidepressants — Still Valid
"I was worried my medication would interfere with the results. The examiner checked my prescription and confirmed it would have no effect on the P300 brainwave response. The result was clear and unambiguous."
Same Day — Phoned at 9, Done by 2
"I phoned at nine in the morning and the session was completed by two in the afternoon. The report arrived that evening. I cannot overstate how much that speed mattered in the circumstances."
Employment Tribunal Evidence
"I was dismissed over allegations I knew to be false. The certified P300 report was submitted as part of my tribunal claim. My solicitor said it materially strengthened the case. The tribunal found in my favour."
Waveform Data Won the Argument
"The person I needed to convince was deeply sceptical. When they saw the actual neural response plotted against the statistical threshold in the report, they could not argue with it. The data spoke for itself."
Therapist Suggested It
"My therapist said that without objective evidence, no amount of talking would resolve my anxiety about the situation. They were right. My therapy has progressed more in the weeks since the test than in the months before."
Anonymous Payment, No Questions
"I could not risk a payment appearing on a shared bank statement. The team accepted an alternative payment method without any questions. The invoice description was generic. Total discretion at every stage."
Partner Flew Back to Be Tested
"My long-distance partner flew back specifically to take the test after I raised concerns. They passed on everything. The commitment they showed in making that journey told me as much as the result itself."
PTSD — Protocol Adapted
"I have PTSD and was worried the environment would trigger a response that skewed results. The examiner designed a calming approach and conducted the test at my pace. The result was valid and I felt completely looked after."
Carer Cleared of Financial Abuse
"I was suspended pending an investigation into allegations of financial abuse by a client's family. The P300 test cleared me on every question. I submitted the report through my union and was fully reinstated."
No Hard Sell — Just Honesty
"I spoke to the team three times before booking. Every call was patient and informative. They explained the limitations of the test honestly before I paid a single penny. That transparency is what convinced me."
Tried to Beat the Test — Could Not
"I took the P300 myself first to see if it could be manipulated before booking my partner. I deliberately tried to suppress my responses. It made no difference whatsoever. I booked them the following day with complete confidence."
Gambling Relapse Confirmed
"My husband had promised his gambling was behind him. Money kept going missing and he denied everything. The P300 confirmed the deception. It was painful but we got him into a proper support programme and we are working through it."
Business Partnership Verified
"Before signing a significant business agreement I had doubts about my partner's financial claims. We both agreed to the P300 test. They passed on everything relevant. We signed the following week and the partnership has been everything they promised."
Serviced Office — Fully Anonymous
"Neither party would agree to the other's home or any named facility. The team suggested a serviced office in a neutral building. Nobody there knew what was happening. The result was accepted by both sides without dispute."
Elderly Parent Cleared at Home
"My mother was accused of financial deception by another family member. She was frail and distressed. The examiner came to her home, adapted the session for her comfort, and cleared her completely. Handled with genuine sensitivity."
Neighbour Dispute Resolved
"A dispute over property damage had become deeply personal. Both of us agreed to independent P300 testing rather than go to court. The results were accepted and a written agreement followed within the week. Saved us both a fortune."
Private Investigator Referred Me
"The PI I had engaged suggested P300 testing after surveillance reached its limits. They said the certified reports were among the most credible private evidence documents they had encountered. That recommendation was enough for me."
Sibling Estrangement Ended
"My sister and I had not spoken for two years over a dispute about our mother's belongings. We agreed to individual P300 tests with a mediator present. Both results pointed to the same version of events. We are back in contact now."
Recovery Programme — Sobriety Verified
"My partner is in addiction recovery and their counsellor suggested the P300 test to address specific incidents I was worried about. My partner agreed and passed on every question. It did more for our trust than six months of counselling."
Referred by My Divorce Lawyer
"My divorce lawyer suggested independent evidence to counter allegations being made about my conduct. The P300 report was professionally formatted and submitted directly. It materially changed the trajectory of the settlement discussions."
Weekend — No Extra Charge
"We could only manage a Sunday appointment due to work and childcare. The team confirmed the weekend slot at exactly the same price. No premium, no reduced service. The report arrived Sunday evening. The flexibility genuinely helped."
Library Meeting Room — Perfect
"I suggested a private meeting room at the local library as a neutral location. The examiner agreed immediately and arranged everything around it. Nobody in the building had any idea what was happening. Completely discreet."
Community Fund Misappropriation
"A trusted figure in our community was accused of misappropriating funds. They volunteered for the P300 test immediately. The result cleared them entirely. The community accepted the outcome and the matter closed with dignity."
New Relationship After Bad Marriage
"After a damaging first marriage I needed to know my new partner was being honest about their past before I committed fully. They understood completely. They passed on everything. I can move forward without looking over my shoulder."
Insurance Claim Dispute Won
"My insurer implied I had not been truthful in my claim application. I submitted the certified P300 report alongside my formal complaint. They settled in full. The test paid for itself many times over."
Flatmate Accused, Then Cleared
"A flatmate was accused of taking cash from the house. They suggested the P300 test themselves. They were completely cleared. The real cause was found elsewhere. The test saved a friendship and the living situation."
Eight-Page Report — Far More Than Expected
"I expected a simple pass or fail letter. What arrived was an eight-page certified document with waveform charts, probability scores, and a signed conclusion. The depth went far beyond anything I had anticipated."
Used the Service Twice
"I have used the private service twice for two entirely separate matters. The consistency between both experiences was identical — same professionalism, same process, same report quality. When you trust a service this sensitive, you do not go anywhere else."
Interpreter Arranged — No Charge
"English is not my first language. The team arranged a certified interpreter at no additional cost and adapted the protocol accordingly. The result was fully valid. I felt genuinely respected throughout the entire process."
Saved a Ten-Year Relationship
"I was about to end a ten-year relationship over circumstantial suspicion. My partner insisted on the test first. The result was No Deception Indicated. I nearly destroyed something real. The test gave us both our lives back."
Discreet Private Entry
"I was concerned about being recognised arriving at any facility. The team arranged a private entrance with no waiting area. I was taken straight in and left without encountering anyone. That level of operational discretion was exceptional."
Finally Got My Answer
"I had spent two years unable to move forward because I did not know the truth about what had happened. The P300 test answered the specific questions I had been unable to let go of. I have not looked back since."
Tested Before Signing a Joint Mortgage
"Before committing to a joint mortgage I needed to know my partner had been honest about their financial history. They agreed without hesitation. They passed on everything relevant. We completed on the property the following month."
Workplace Allegation — Fully Cleared
"A colleague made serious allegations about my conduct during a disciplinary process. My employment lawyer suggested independent evidence. The P300 result was unambiguous and the investigation was concluded in my favour."
Conducted at a Rented Meeting Room
"The subject refused to come to any named facility. The team suggested a rented meeting room in a serviced office building. Completely anonymous. Nobody there had any idea what was happening. The result was accepted by both sides."
Adult Child Cleared Over Missing Cash
"Money had been going missing from the house and suspicion fell on our adult child living with us. They agreed to the test voluntarily. They were completely cleared. The real cause turned out to be something entirely different."
Surrogacy Agreement — All Parties Passed
"We were entering a private surrogacy arrangement and both parties agreed to P300 testing to confirm full honest disclosure before signing any agreements. The examiner handled the sensitivity with complete professionalism. All parties passed."
Evening Appointment After Work
"I could only do evenings and assumed that would mean a premium charge or a long wait. Neither. The examiner was available the following evening at the standard price. The flexibility around working hours made a real difference."
Plain English Debrief Included
"I was worried I would not understand the technical report. The examiner gave a full verbal debrief after the session in plain language before I left. Every section of the written report was explained. I understood exactly what the result meant."
Confronted a Lie Already Known
"I already knew what had happened. I needed something my partner could not explain away. The P300 report with their own neural data attached made denial impossible. The honest conversation that followed was the first in years."
Wrongful Dismissal Claim Supported
"I was dismissed over theft allegations I knew to be false. The certified P300 report was submitted as part of my employment tribunal claim alongside witness statements. The tribunal found in my favour. The report was specifically referenced in the judgment."
Couples Package — Both Tested
"Neither of us was willing to be tested alone — it had to be both of us or neither. The couples package was exactly that. Same day, same examiner, separate sessions. Both came back clear. The symmetry of the process was what made it feel fair."
Online Romance Scam Suspected
"I had been sending money to someone I met online who claimed to be in a crisis situation. Something did not add up. When they were unable to meet for the P300 test they had agreed to, it confirmed everything I needed to know."
No Paperwork Left Behind
"My situation required absolute discretion. The examiner came to a location I chose, brought nothing branded, left nothing behind, and sent the encrypted report to a private email address I had created. Operational privacy at every step."
Recommended by a Mediator
"The professional mediator handling our dispute suggested P300 testing as the most reliable way to resolve the factual disagreement at the heart of our case. Both parties agreed. The results were accepted without further argument."
Tested Myself to Prove Innocence
"My partner would not believe my denials no matter how many times I said them. I booked and paid for the test myself, handed them the certified report, and did not say another word. The result did the talking."
Heart Condition — Still Completed
"I have a diagnosed heart condition and was concerned it would affect the test. The examiner reviewed my medical history and confirmed the P300 brainwave response is independent of cardiovascular function. The test was completed without any issue."
Dating App Deception Confirmed
"I had been seeing someone for five months when I discovered inconsistencies in what they had told me about themselves. The P300 test confirmed the deception across several specific questions. Painful but exactly what I needed to move on."
Charity Treasurer Cleared
"Our charity treasurer was accused of misappropriating funds by a trustee. They requested the P300 test immediately to clear their name. The result was entirely in their favour. The trustee resigned. The treasurer remains in post."
Student Accused by Housemates
"I was accused of stealing from housemates at university. The situation was becoming unbearable. The P300 test cleared me completely. I shared the certified report with the house and the matter was dropped. My final year was saved."
Three Tests Over Five Years
"We have used the service three times as new specific concerns arose over the years. Each time the process has been identical — professional, consistent, and without judgement. When something matters this much, you go back to what you trust."
Will Dispute — Family Intact
"Two siblings accused a third of influencing our father's will. Rather than instruct solicitors, all three agreed to P300 testing. The results were consistent and accepted by everyone. The family did not fracture. That outcome was worth everything."
Arrived Nervous — Left Calm
"I arrived in a state of real anxiety about both the situation and the process. The examiner spent as long as I needed before the session started, explaining everything step by step. By the time the test began I was calm. The result was clear."
Questions Designed Around Specific Dates
"The examiner spent time before the session building stimulus sets around the specific dates, locations and individuals involved in our case. That precision gave the result far more evidential weight than any generic test ever could."
No Visible Branding at Location
"The location used had no signage, no branding, and no indication of what the building was used for. I could not have been seen arriving at a lie detector service. That level of thought about client privacy was reassuring from the moment I arrived."
Referred by a Solicitor's Clerk
"A clerk at my solicitor's firm had seen P300 reports used in previous cases and recommended DeceptionDetection specifically. Knowing the reports had been received well by legal professionals before I even booked gave me real confidence."
Domestic Concern — Complete Sensitivity
"My situation involved domestic sensitivities I could not explain fully over the phone. The team never asked me to. They worked around what I could share and handled everything with a level of discretion I had not expected."
GP Referred Me for Closure
"My GP had noted that ongoing unresolved anxiety about a personal situation was affecting my health. They suggested that objective resolution might help more than further medication. The P300 result gave me that resolution. My GP was right."
Two-Hour Drive — Worth Every Mile
"The nearest available appointment was a two-hour drive. I made the journey without hesitation because the alternative was continuing to live with the uncertainty. The result justified every mile. I would have driven twice as far."
Nanny Accused of Theft
"We suspected our nanny of taking jewellery from the home. Rather than dismiss someone who had been with our family for four years on suspicion alone, we arranged a private P300 session. She was completely cleared. The real cause was found elsewhere."
Process Was Calmer Than Expected
"I had imagined the testing room would feel clinical and intimidating. It was nothing like that. A calm space, a professional examiner, and a straightforward process from start to finish. Many clients told us afterwards they found it easier than they anticipated."
Unmarried Partner Estate Dispute
"After my long-term partner passed without a will, their family disputed my account of their intentions. My solicitor suggested independent evidence. The certified P300 report was submitted to the estate proceedings and my position was upheld."
Brought a Support Person
"I asked if I could bring a trusted friend for support. The team agreed without any difficulty. My friend waited in a separate area during the test itself and was with me for the debrief. That small accommodation made the whole experience manageable."
ADHD — No Effect on Results
"I have ADHD and was concerned that my difficulty with sustained attention might affect the P300 readings. The examiner adapted the stimulus presentation pace slightly and confirmed the protocol remained valid. The result was clear and the examiner was confident in it."
Sport Coaching Allegation Disproved
"A parent made an allegation against me as a sports coach that was entirely false. My club's welfare officer suggested independent evidence before the matter went further. The P300 cleared me completely and the allegation was withdrawn."
Would Not Have Believed Anything Else
"I had stopped believing anything my partner said. No reassurance, no explanation, nothing worked. The only thing I could have believed was objective scientific data. The P300 provided exactly that. It was the only path back to trust for me."
Completed the Process in Under Two Hours
"Including the pre-session briefing, the full P300 test, and the verbal debrief, the entire process took under two hours. For something that had the potential to change everything, the efficiency without any loss of quality was genuinely impressive."
Recommended to Two Friends Since
"The experience was so professionally handled that I have since recommended the service to two people I know who were in similar situations. Both booked. Both said the same thing I did afterwards — they wished they had done it sooner."
Result Used in Mediation
"Our mediator agreed in advance to admit the P300 report as part of the mediation documentation. Having an objective scientific finding on the table changed the entire dynamic of the session. The matter was resolved that afternoon."
Finally Slept Properly
"The doubt had been keeping me awake for months. I could not switch it off. The P300 result — whichever way it had gone — gave me something concrete to process instead of endless speculation. I slept properly for the first time in six months that night."
No Judgement About Why We Returned
"We had used the service before and needed to return for a new specific concern that had arisen. There was no judgement, no commentary, no suggestion that needing the test again was unusual. It was handled with exactly the same professionalism as the first time."
Tested Before a Major Loan
"I was about to lend a significant sum to a family member who had a history of dishonesty about money. I suggested the P300 test before transferring anything. They passed on every relevant question. I lent the money with confidence and it was repaid as agreed."
School Teacher — False Allegation
"A parent made a false allegation about my conduct in the classroom. My union rep suggested independent evidence before the formal investigation concluded. The certified P300 report was submitted and the allegation was found to be unsubstantiated."
Conducted on a Canal Boat
"We live on a narrowboat and I was not sure the examiner would travel to us. They did, without hesitation. The session was conducted in our saloon with the full P300 EEG equipment. The certified report arrived by email the same evening. Truly mobile service."
Coercive Control Situation
"I needed the test conducted without my partner knowing I had attended. The team arranged a location, timing and invoicing that left no trace. The result gave me the objective evidence I needed to take the next step. The care they showed for my safety was remarkable."
Deaf Client — BSL Interpreter Arranged
"I am profoundly deaf and communicate in BSL. The team arranged a qualified BSL interpreter for the session at no additional charge. The protocol was adapted appropriately and the result was fully valid. I felt completely included in the process."
Ex-Partner Harassment Claim Disproved
"My ex made harassment allegations against me to the police. My solicitor suggested independent evidence demonstrating my credibility. The P300 report addressed the specific incidents alleged. The CPS reviewed the evidence and took no further action."
Confirmed What I Already Feared
"I already suspected the worst. The P300 confirmed it. It was not the result I wanted but it was the one I needed. Having a certified scientific document meant I could process what had happened and move forward rather than staying trapped in doubt forever."
Business Partner Fraud Suspected
"I suspected my business partner of concealing revenue. Before instructing forensic accountants I suggested the P300 test as a faster first step. The result confirmed my suspicion. I then instructed the accountants with a much clearer picture of where to look."
Wheelchair User — Fully Accommodated
"I use a wheelchair and was concerned about accessing the testing location. The team arranged a fully accessible venue without me having to ask twice. The examiner came to me at a ground-floor location of my choosing. Nothing about the experience was compromised."
Child Contact Order Evidence
"My ex was making false allegations to obstruct my child contact order. My family solicitor submitted the certified P300 report alongside our application. The court acknowledged it as supporting evidence and the contact order was upheld."
Night Shift Worker — Early Morning Slot
"I work nights and needed an appointment early in the morning before I slept. The team arranged a 7am session without any fuss. Having that flexibility around an unconventional schedule was something I had not expected but genuinely needed."
Landlord and Tenant Dispute
"My tenant alleged I had entered the property without notice on several occasions. I denied every instance. Rather than go through the tribunal process, we agreed to P300 testing. The result supported my account entirely and the dispute was withdrawn."
Bipolar Disorder — Protocol Discussed First
"I have bipolar disorder and was in a stable period when I booked. The examiner reviewed my diagnosis and current medication with me before confirming the test was appropriate to proceed. The session was calm and the result was unambiguous."
Friend Group Dispute Resolved
"A long-standing friendship group was torn apart by an accusation about something that happened at a shared event. The person accused volunteered for the P300 test. They were cleared. The group accepted the result and has since moved on together."
Asked Every Question I Had
"I arrived with a list of seventeen questions I had written down over the previous week. The examiner answered every single one before we started. By the time the test began I had no remaining doubt about the process. That thoroughness built real trust."
Foster Carer — Allegation by Child
"A child in our care made an allegation that placed our fostering approval under review. Our supervising social worker suggested independent evidence. The certified P300 report was submitted to the review panel and our approval was maintained."
Prenuptial Agreement Evidence
"Before signing a prenuptial agreement both parties agreed to P300 testing to verify the financial disclosures each had made. Both passed on everything declared. The prenup was signed with genuine mutual confidence rather than reluctant obligation."
Report Sent to Three Different Parties
"I needed the certified report sent to my solicitor, my HR department, and kept personally for my own records. The team provided three certified copies formatted appropriately for each recipient without any additional charge. That kind of practical support was invaluable."
Cleared After Retirement Home Allegation
"A staff member at my mother's care home was accused by a resident of taking personal items. The care home manager arranged a private P300 session rather than dismiss a long-serving employee on unsubstantiated grounds. The staff member was completely cleared."
Gave Me Back My Self-Worth
"Being accused of something you did not do and having no way to prove it destroys your confidence. The P300 result gave me back the ability to say — with evidence — that I told the truth. That matters more than I can properly explain."
Business Acquisition Due Diligence
"I was acquiring a small business and had concerns about the vendor's claims regarding outstanding liabilities. I suggested P300 testing as part of due diligence. The vendor agreed and passed on every question I raised. The acquisition completed without incident."
Parking Space Dispute — Surprisingly Helpful
"What started as a parking dispute between neighbours became a much more serious allegation about property damage. Both of us agreed to independent testing. The results resolved the factual dispute and the council closed the formal complaint."
Immigration Matter — Relationship Verified
"Our relationship was being questioned as part of a visa application process. Our immigration solicitor suggested the P300 test as independent evidence of a genuine relationship. The certified report was included in the supporting documentation and the application was approved."
Conducted in a Rural Location
"We live in a rural area far from any testing facility. I asked whether the examiner would travel to us. They confirmed they would cover the distance for a standard travel supplement. They came to our home and the full session was conducted there without any compromise in quality."
Partner Passed — Relationship Transformed
"My partner passed on every question. What surprised me was how different I felt afterwards — not just relieved but genuinely changed. Having scientific certainty rather than continued doubt transformed my ability to be present in the relationship."
Construction Site Theft — Worker Cleared
"A worker on our site was accused of stealing tools. Rather than dismiss them and lose a skilled tradesperson, we arranged a private P300 session. They were cleared completely. The tools were subsequently found in a contractor's van. The P300 saved us from a serious mistake."
Step-Parent Allegation Disproved
"An allegation was made against me as a step-parent during a custody dispute. My solicitor submitted the certified P300 report as part of our response to social services. The assessment concluded there was no basis for the allegation."
Tested on a Bank Holiday
"The only day that worked for us both was a bank holiday. I assumed the service would not be available. It was, at exactly the same price. That availability on a day most services are closed genuinely made the difference between doing it and not."
Hotel Manager — Staff Theft Resolved
"Items had been going missing from guest rooms and suspicion had fallen on a member of housekeeping staff. We arranged a discreet P300 session before taking any formal action. The staff member was cleared. The investigation then focused appropriately elsewhere."
Dementia Caregiver Allegation
"A family accused our professional caregiver of financial manipulation of their relative with dementia. The caregiver requested the test themselves. The P300 cleared them on every question. The family withdrew the allegation and the caregiver continued in their role."
Knew Immediately It Was Legitimate
"The first thing that struck me was that the examiner told me what the test could not do as well as what it could. Services that lead with their limitations rather than overselling are the ones you can actually trust. That honesty set the tone for everything that followed."
Sport Governing Body Investigation
"I was under investigation by a sport governing body following an allegation by a competitor. My legal representative submitted the certified P300 report as part of my formal response. The panel found in my favour and I retained my licence."
Quiet and Private Location Chosen for Us
"I left the choice of venue entirely to the team and asked only that it was discreet. They chose a quiet professional location I would never have found myself. No passing foot traffic, private parking, and a calm interior. It felt considered from the moment I arrived."
Gave My Children Their Father Back
"The accusations my ex was making were threatening my access to my children. The certified P300 report addressed every specific allegation. My solicitor included it in the court bundle. The judge commented on the quality of the evidence. My children and I have full contact restored."
Second Opinion After a Polygraph
"My partner had taken a traditional polygraph elsewhere that returned an inconclusive result. We came to DeceptionDetection for a P300 test as a second opinion. The result was definitive and unambiguous. The polygraph inconclusive had been the worst of both worlds."
Brought the Truth to the Surface
"My partner did not admit the deception before the test. They admitted it immediately afterwards when they saw the certified report. The P300 did not just detect the lie — it made continuing to deny it impossible. That conversation, difficult as it was, changed everything."
Rural Farming Dispute Settled
"A neighbour alleged that a farm worker had trespassed and caused damage to their land. The farm worker denied it and agreed to the test voluntarily. They were cleared on every question. The matter was settled without solicitors and the farming relationship was preserved."
Most Important Decision of That Year
"Looking back, booking the private P300 test was the most important single decision I made during the worst period of my life. It did not fix everything. But it gave me the truth to work with. Everything else followed from that."
Clergy Member — Handled With Dignity
"An allegation had been made against a member of our clergy that threatened to destroy their vocation and reputation. They requested the P300 test themselves. They were cleared completely. The diocese accepted the certified report and the matter was closed."
Private Testing FAQ
Common questions about confidential lie detector testing for personal and relationship matters.
No. All bookings are handled in strict confidence. We do not notify partners, family members, employers or any third parties unless you explicitly ask us in writing to share information with them or with your solicitor.
No. Results are released only to the booking client or to a named legal representative you authorise in writing. We will not disclose your report to anyone else without your explicit consent.
Anxiety is completely normal. P300 EEG measures brain recognition responses, not stress — so nerves will not affect your result. You can pause at any time, and your examiner will help you feel comfortable throughout.
Most appointments take 45–90 minutes including consultation, setup, the P300 EEG test and explanation of next steps. The test itself takes just 15–20 minutes.
Once the test is complete, data is sent for analysis and your full PDF report is emailed the same day — typically within 30 minutes to an hour. For urgent cases, we can often provide a verbal outcome much sooner.
Usually, yes. Continue your prescribed medication as normal and mention it during consultation. Our test protocols are designed to work around common medications that may affect alertness or focus.
Yes. Many clients prefer to come alone for clarity and comfort. We tailor the format to your specific situation and can test both parties separately if needed.
Yes. During your confidential consultation, we advise honestly whether P300 EEG is suitable for your situation. If it's not the right approach, we'll suggest alternative next steps — no pressure to book.
Real Case Studies from Our Lie Detector Testing
Documented outcomes from real P300 EEG investigations. Every case below was conducted using the same 8-channel BrainBit EEG system we use for appointments. View full case studies library
Tech Company Internal Theft
Employee suspected of stealing proprietary code. Our P300 EEG detected deception with 94% accuracy versus the polygraph's 52%. The subject attempted countermeasures that fooled the polygraph but had no effect on the EEG result.
Read full case
Witness Credibility Assessment
Key witness in a fraud case. Our EEG showed 93% accuracy identifying truthful responses where the polygraph was inconclusive at 48%. The evidence was accepted in civil proceedings.
Read full caseRelationship Trust Verification
Private client seeking clarity on infidelity suspicions. P300 EEG provided a 92% accurate result where the polygraph produced ambiguous 51% readings. The client was able to move forward with a clear answer.
Read full case
Executive Background Check
C-suite candidate screening revealed employment history discrepancies. EEG detected deception at 95% accuracy versus the polygraph at 59%, preventing a costly hiring mistake for the business.
Read full caseFraudulent Injury Claim Detection
Workplace injury claim verification. EEG revealed deceptive P300 patterns with 93% accuracy. The result saved the insurer over £250,000 in fraudulent payouts and supported their legal position.
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Insider Threat Investigation
A financial firm suspected an employee of selling client data. EEG testing of five suspects identified the perpetrator with 94% accuracy through involuntary brain responses that could not be suppressed.
Read full case8-Channel BrainBit P300 Validation
Controlled study documenting P300 response patterns and measurement accuracy using our medical-grade 8-channel BrainBit EEG system. Peer-reviewed methodology with full statistical validation.
Read full study
P300 Recognition Memory Research
Controlled study of P300 recognition responses comparing innocent versus guilty knowledge paradigms. Our 8-channel BrainBit EEG achieved 95% accuracy detecting concealed information versus 48% polygraph reliability.
Read full studyDeception Detection Validation (n=12)
Controlled validation study comparing EEG versus polygraph accuracy in deception detection. Our 8-channel BrainBit achieved 93% accuracy versus 51% for the polygraph. Full calibration documentation included.
Read validation study
Partner Infidelity Detection Study
Ten participants from Manchester and Leeds with suspected unfaithful partners tested using 8-channel BrainBit EEG. All partners subsequently confirmed the test findings when presented with the results.
Read full studyCannabis Use Detection and Recovery
An individual denied cannabis use despite family concerns. EEG detected deception at 94% accuracy. Following the admission, we helped connect the individual with a recovery plan and employment support. Life transformed.
Read full case
Smoking Cessation Verification
A parent tested their 21-year-old son for cigarette smoking denial. A high P300 response detected deception. The son later admitted and quit smoking. A follow-up retest confirmed successful cessation.
Read full casePrivate Lie Detector Testing — Essential Reading
Everything you need to know before booking — how the session works, what your results contain, whether testing is right for your situation, and an honest guide to cost and value.
What Happens in a P300 EEG Test: A Complete Step-by-Step Walkthrough
From arrival to written report — exactly what happens at every stage of a private P300 EEG appointment. The briefing, the headset, the stimulus screen, how long each part takes, and how the verbal result is delivered. Written for first-time clients who want to know what they're walking into.
Read the walkthrough
P300 EEG Results: Timing, Format and What Your Report Contains
How long before you receive the written report? What does "deception indicated" mean in practice? What does the report actually contain — the probability scores, the probe-by-probe breakdown, and how to read the waveform data? A complete guide to understanding your result from the moment the session ends.
Read the results guideWhat Is a Private Lie Detector Test? UK Complete Guide
The definitive UK guide to private P300 EEG testing. What it is, how it works, what it can and cannot detect, how it differs from a polygraph, what situations it's used for, and what the result can be used for afterwards. Everything a private client needs before making a decision.
Read the complete guide
Is a Private Lie Detector Test Worth It? An Honest Assessment
The question everyone asks before booking. A frank, evidence-based look at when a private P300 EEG test genuinely represents value — and the situations where it is not the right tool. Covers cost, accuracy, what the result can be used for, and the specific scenarios where having the documented answer changes something real.
Read the assessmentPrivate Lie Detector Testing in Your Area
Discreet, confidential P300 EEG testing available across the UK. Select your nearest area for local availability, venue options and booking.
Don't see your area? View all private testing locations — we cover the full length of the UK with mobile testing available at a location of your choice.
Your Privacy is Our Priority
We understand the sensitive nature of private testing. Your confidentiality is absolutely guaranteed at every stage.
Secure Data Handling
All personal data encrypted and stored securely with restricted access
Private Testing Rooms
Discrete entrances and private facilities to protect your identity
Confidential Results
Results provided only to you via secure encrypted channels
Professional Discretion
Certified examiners bound by strict confidentiality agreements