Professional deception detection using P300 EEG brain-wave technology — 95% accuracy, same-day results, from £499. Serving Harrogate and the wider North Yorkshire area.
Why People Come To Us
The clarity you came for. The truth, in 30 minutes.
Doubt ends here.
The question you've been carrying for months — sometimes years — ends in a single 90-minute session. No more wondering.
The clarity you came for.
A clear, written, defensible result. No "inconclusive", no grey areas — just a definitive answer you can actually act on.
The truth, in 30 minutes.
Your written report is in your hand the same hour the headband comes off. Same-day appointments available across the UK.
Deception detection is the process of determining whether someone is being truthful — using science, not guesswork.
When someone lies, their body and brain respond in measurable ways. For over a century, polygraph machines tried to catch those responses by tracking heart rate, blood pressure, and sweating. The problem is those signals are triggered by stress and anxiety — not deception itself. A nervous truthful person fails. A calm liar passes.
Modern deception detection takes a fundamentally different approach. Instead of measuring stress, our P300 EEG system measures what your brain recognises. When your brain encounters information it already knows — a name, a place, a detail from an event — it produces an involuntary electrical spike. You cannot suppress it, fake it, or train it away. That's what makes P300 EEG deception detection 95% accurate, compared to roughly 65–70% for a traditional polygraph.
We provide professional deception detection across Harrogate and the wider North Yorkshire area for relationships, family disputes, workplace accusations, corporate investigations, and legal matters. Testing is non-invasive, takes around 90 minutes, and starts from £499. We travel to you or you can visit one of our testing venues.
The P300 is a specific electrical signal your brain produces when it recognises something it already knows. Here's exactly how we use it.
Roughly 300 milliseconds after your brain sees a stimulus it recognises, it produces a measurable spike of electrical activity called the P300 event-related potential. This was first documented in peer-reviewed neuroscience research in the 1960s and has been studied extensively ever since. The P300 is completely involuntary — it happens before conscious thought. Your brain fires it whether you want it to or not.
You wear a lightweight BrainBit EEG headband that sits on your forehead and behind your ears — no wires, no straps, no chest sensors. You sit in front of a screen and are shown a series of words, images, or statements. Some are relevant to the case. Some are irrelevant controls. All you do is watch.
Our 8-channel EEG system records your brain's response to each stimulus in real time. When your brain recognises something relevant — a person's name, a location, a detail you claim not to know — the P300 spike appears across multiple channels. When the stimulus means nothing to you, the signal stays flat. That recognition vs no-recognition pattern is what determines the result.
Polygraph countermeasures work because they target voluntary body responses — you can control your breathing, clench your toes, or bite your tongue to disrupt readings. The P300 response is neurological and involuntary. There is no muscle to clench, no breathing pattern to change, and no mental technique that suppresses it. Published research by Farwell & Donchin (1991) and Rosenfeld et al. (2008) consistently shows detection rates between 90% and 98% in controlled blind testing.
Within the hour of testing, you receive a detailed 8-page forensic report covering the raw EEG data, P300 spike analysis for each question, deception scoring, and a clear truthful or deceptive determination. The report is suitable for solicitors, employers, HR departments, or personal use. Expert testimony is available on request.
Independent research consistently shows P300 EEG brain-wave analysis outperforms traditional polygraph across every key measure. Here's how the two methods compare for clients in Harrogate.
Sources: Farwell & Donchin (1991), Rosenfeld et al. (2008), peer-reviewed EEG literature.
P300 EEG measures an involuntary brain response directly. A polygraph measures stress and asks an examiner to interpret it — which is why the two produce different kinds of finding.
Polygraph results can be manipulated with breathing or muscle techniques. P300 brain-wave responses cannot be consciously controlled.
No chest straps, blood pressure cuffs or finger sensors. Just a lightweight headband — making results in Harrogate more reliable and comfortable.
The P300 brain-wave spike is a single, unmistakable response. Polygraph produces four overlapping signals full of noise. See why P300 EEG results in Harrogate are so much clearer to read and harder to dispute.
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.
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.
Every P300 EEG test includes a detailed 8-page forensic 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.
Granular breakdown of deception scores calculated from specific neural biomarkers.
Clear, definitive results indicating deception probability and overall risk assessment.
Signed certification of examination suitable for legal or private verification purposes.
Full transparency with access to the raw visual data used to generate the final conclusion.
Millisecond-by-millisecond timeline of brain activity in response to probe stimuli.
Comparative analysis of responses to relevant, irrelevant, and control questions.
Analysis of response latency indicating increased cognitive load during deceptive answers.
Scientific validation of P300 wave amplitude and latency specific to the subject.
We understand that visiting a testing centre is not right for everyone. That’s why we offer fully mobile P300 deception detection testing at your home, workplace or chosen safe location in Harrogate and across North Yorkshire.
Our examiners can travel discreetly to your home in Harrogate or elsewhere in North Yorkshire and set up the P300 EEG equipment in a quiet room. This is ideal for relationship issues, family disputes and highly sensitive personal matters.
If home or office is not suitable, we can arrange a neutral “safe place” such as a private meeting room or hotel suite in Harrogate or elsewhere in North Yorkshire. This keeps all parties comfortable and protected.
For businesses, we bring the deception detection system directly to your Harrogate or North Yorkshire office or warehouse, minimising disruption while providing clear, objective findings.
Protect your Harrogate and wider North Yorkshire business interests with professional P300 EEG deception detection. Advanced screening for employees, fraud investigation, and corporate security.
Comprehensive deception detection services for Harrogate and North Yorkshire businesses. Our P300 EEG technology provides reliable screening and investigation services to protect your company from fraud, theft, and misconduct across the region.
Volume testing from £399/person • Annual contracts available • On-site testing in Harrogate and across North Yorkshire
Confidential lie detector testing for personal matters in Harrogate and across North Yorkshire. Relationship issues, family disputes, and private investigations with complete discretion.
Private deception detection services for Harrogate residents and the wider North Yorkshire community seeking truth in personal matters. Our sensitive approach and advanced P300 EEG technology provide clarity in difficult situations.
Individual tests from £499 • Couples testing £799 • Payment plans available for Harrogate and North Yorkshire residents
Our P300 deception detection tests support individuals, couples, families, businesses and legal professionals across Harrogate and the wider North Yorkshire region.
Many people in Harrogate and throughout North Yorkshire come to us when they need to clear their name or confirm the truth in difficult family situations. Our approach is calm, respectful and completely confidential.
Harrogate and North Yorkshire companies, HR teams, solicitors and investigators use our deception detection tests as part of broader decision-making and evidence gathering.
Our mobile P300 EEG units cover all of Harrogate and beyond, serving the entire region.
When you search for deception detection or lie detector tests in Harrogate or across North Yorkshire, you need a provider you can genuinely trust.
Tell us your situation in plain English. Our AI will generate 3 professionally worded yes/no questions — ready to use in your P300 EEG test in Harrogate.
Here are your 3 suggested P300 test questions for Harrogate:
These questions are ready to use. Book your test in Harrogate and we'll confirm and finalise them with you before the session.
Book My Test in Harrogate →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.
Watch how our brain-wave technology reveals the truth about infidelity with 95% accuracy
Ready to discover the truth? Call 0161 524 5513 or book confidential consultation →
A snapshot of how individuals, families and organisations across the UK describe their experience with our deception detection service. Scroll sideways to browse more reviews.
“This was an emotional process for everyone involved. The staff were patient and neutral, and the test helped us rebuild trust in a difficult family situation. I would recommend them to anyone facing long-running disputes.”
— M. Hughes - Family Client
“One of our senior staff members requested testing to clear their name during an investigation. The P300 EEG results supported their account and helped close the case fairly. Professional and independent.”
— Compliance Manager - Logistics
“We needed a modern, science-based approach for a historic allegation. The P300 EEG method was clearly explained and the report fed into our wider legal strategy. Communication from the team was excellent.”
— Solicitor - Criminal Law
“Even though the result confirmed my worst fears, I finally had something concrete instead of constant doubt. The staff were kind, non-judgemental and focused on my wellbeing as much as the technical side.”
— E. Martin - Private Client
“We were in a difficult co-parenting situation with accusations on both sides. The test results added a neutral, scientific element that helped our mediator move things forward.”
— Parent - Family Mediation Client
“I volunteered for the test to reassure my partner after previous trust issues. Getting a clean result from a proper scientific method helped both of us start again with more honesty.”
— J. McDonald - Private Client
“Most of my concerns were about online behaviour rather than physical cheating. The team helped design questions that reflected that and the results gave me a clear picture of what had really happened.”
— C. Green - Private Client
“We now see P300 EEG testing as part of our wider risk-management toolkit in very specific, high-stakes situations. The service is discreet, professional and focused on protecting both the business and employees.”
— Group HR Director - National Brand
“We used Deception Detection UK as part of our due-diligence checks for a sensitive franchise partnership. Their experience with corporate and legal environments made the process straightforward.”
— Franchise Director - Service Industry
“The whole process felt clinical but kind. There was no pressure about the outcome either way - just a focus on getting an accurate reading and explaining it in plain English.”
— Anon - Private Client
Swipe or use the arrows to view more client reviews.
The formal name for what we run is a Concealed Information Test, or CIT — known in older literature as the Guilty Knowledge Test. The distinction matters, because it is what separates this from a polygraph and it is worth understanding before you book anything.
A polygraph asks whether you are lying. A CIT asks something narrower and far more answerable: does this person recognise information that only someone involved would know? You are shown a sequence of items, most of them irrelevant, with the critical detail hidden among them. If you recognise it, your brain produces a P300 — an event-related potential appearing roughly 300 milliseconds after the stimulus, before any conscious decision to conceal it is possible.
This is the oddball paradigm, and it is one of the most replicated findings in cognitive neuroscience. The response is not to deception. It is to recognition. That is why rehearsal, composure and confidence make no difference to the result — there is nothing to perform.
A CIT only works when there is genuine concealed information to test against — a specific detail, known to the person involved and not to anyone else. That makes it powerful for theft, fraud and event-specific questions, and unsuitable for vague ones. We will tell you at enquiry stage if your case in Harrogate is not a fit, rather than take a booking that cannot produce a meaningful result.
No credibility assessment method is free of error, and any provider claiming otherwise is overselling. An accuracy figure describes performance across a population, not a guarantee about one result. Where the base rate matters — how likely deception was in the first place — we say so in the report rather than leaving you to infer it.
Every finding we issue states the protocol used, what was measured, and the limits of what it establishes. That is the difference between a documented result and a verdict.
Professional deception detection services in Harrogate start from £499 for standard P300 EEG testing. Same-day emergency service is available for £599. We offer corporate packages and volume discounts for multiple tests across North Yorkshire.
DeceptionDetection provides professional P300 EEG lie detector testing throughout Harrogate and surrounding North Yorkshire areas. We have testing facilities in central Harrogate and offer mobile testing services across North Yorkshire for your convenience.
P300 EEG deception detection achieves 95% accuracy by measuring involuntary brain responses. Unlike traditional polygraph tests, P300 brain-wave analysis cannot be manipulated or controlled, making it the most reliable deception detection method available in Harrogate and across North Yorkshire.
A complete P300 EEG deception detection session in Harrogate typically takes 45-90 minutes including setup, testing, and initial results analysis. This is significantly faster than traditional polygraph methods while providing superior accuracy for clients across North Yorkshire.
Yes, we offer same-day emergency deception detection services in Harrogate for urgent cases across North Yorkshire. Contact us at 0161 524 5513 for immediate availability. Same-day service is £599.
Absolutely. All deception detection services in Harrogate and throughout North Yorkshire are 100% confidential. We comply with GDPR regulations and maintain the strictest privacy standards. Your results are never shared without explicit consent.
Our P300 EEG technology in Harrogate can detect all forms of deception including lies about past events, hidden knowledge, infidelity, theft, fraud, and misconduct. The brain's P300 response cannot be controlled, ensuring accurate detection for North Yorkshire clients.
Yes, we provide mobile P300 EEG deception detection services throughout Harrogate and the wider North Yorkshire area. Our certified examiners can conduct testing at your home, office, or preferred location with portable professional equipment.
Yes, many Harrogate and North Yorkshire couples use our deception detection services to resolve trust issues, verify fidelity, and rebuild relationships. We provide sensitive, professional testing with counselling support available where needed.
Documented cases from corporate theft to relationship disputes — what was found, who was cleared, and what the evidence enabled.
An employee suspected of stealing source code. Polygraph returned inconclusive at 52%. P300 EEG detected deception at 94% — even after attempted countermeasures.
Read the case study
£23,000 missing from a warehouse. Three staff under suspicion. All tested in a single day — two received written exoneration, one deception-indicated.
Read the case studyThree audits. Eight staff. Nine months with no resolution. All eight tested in one day — two deception-indicated, six cleared. £31,500 recovered.
Read the case study
Tenant denied liability for flood damage. No witnesses, no CCTV. P300 EEG deception-indicated on all three probe sets. Civil recovery issued.
Read the case studyGuides, research and expert advice from our P300 EEG testing practice.
The complete guide to approaching P300 EEG testing when infidelity is suspected.
ResearchPeer-reviewed accuracy data and why the science has moved on from polygraph.
ResearchCountermeasures, coaching, and why the P300 brain response is involuntary.
Mental Health4x increased depression risk. The research on what false accusations do.
GuideFrom arrival to results. Exactly what to expect during your appointment.
LegalWhere P300 EEG evidence stands in UK courts, tribunals and civil proceedings.
Professional P300 EEG lie detector testing and deception detection services across Harrogate and the wider North Yorkshire region. Advanced brain-wave technology with 95% accuracy. Same-day appointments available from £499.
Deception Detection Harrogate — appointments at home, at work or a neutral venue.