Lie Detector Test Ireland
Professional P300 EEG brain-wave lie detection across Ireland: at your home, or at a private venue we arrange in your town. €599 for a single test, or €949 for two people on the same visit, saving €249. Priced and charged in euro. Dublin, Cork, Galway, Limerick, Waterford and every county between — strict confidentiality, written report in your hand within the hour.
Prefer to talk it through? Call +44 161 524 5513, Mon-Fri 8am-8pm. Not sure of dates yet? Ask first and we agree a date before you pay anything.
The not-knowing ends today.
One session. A clear, written answer you can finally act on.
An answer you can trust
The question you've carried for months — sometimes years — is settled in a single 90-minute session. Examiner-led, evidence-based, built to be certain.
A result that holds up
Clear and written. A pass or a fail rather than an inconclusive, so you leave with a conclusion you can act on.
Your report in 1 hour
Written report in your hand before the examiner leaves — within the hour of finishing the test, at your home or at a venue near you. No waiting days for an answer.
Brain-Wave Testing. Not Sweat & Heart Rate.
Traditional polygraph measures anxiety — breathing, heart rate and skin sweat. We do something different. Our EEG headset records a brain response known as the P300, which appears when the brain recognises a detail it already knows. It is not reading your nerves; it is reading recognition, which is a different question from the one a polygraph asks. The published research is summarised in the note at the foot of this page.
Traditional Polygraph
- Measures stress responses — not truth directly
- Affected by nerves, anger and stress
- Chart interpretation depends on the examiner
- Typically a 2-3 hour session
- Physiological sensors on the body
- Limited availability in Ireland
P300 EEG (What We Do)
- Measures brain recognition — not emotional state
- Involuntary recognition response
- Nerves do not fail an honest subject
- 60-90 minute appointment
- Waveform record with every report
- Examiner comes to you, anywhere in Ireland
Built for Ireland's Most Common Cases
Most people booking us in Ireland are looking to resolve something personal, private, or family-related — where certainty matters and polygraph simply isn't widely available. Here's what we see most often.
Relationship & cheating
Private, discreet testing for cheating allegations, emotional affairs, messaging history disputes, or to verify a partner's statements before trust is rebuilt. Confidential venue, written report within 1 hour. Test both partners on the same visit for just £799.
Family & Household
Theft in the home, inheritance disputes, adult children under suspicion, sibling disagreements, or accusations within blended families. Clear, objective answers without police involvement.
Business & Workplace
Specific-incident investigations with employee consent — missing stock, data leaks, suspected fraud, internal misconduct allegations. Test multiple suspects on one visit for significantly lower per-test cost.
False Accusations
If you've been accused of theft, dishonesty or misconduct at work or in your personal life, a passed P300 EEG test provides objective brain-wave evidence that you're telling the truth — far more robust than your word alone.
Pre-Relationship / New Partner
Past behaviour verification, dating-profile honesty, discrete checks before a serious commitment. Used quietly by many Irish clients before getting engaged, buying property together, or introducing someone to children.
Second Opinion
Previously failed a polygraph elsewhere and want an independent P300 EEG test on the same facts? P300 measures brain recognition, not anxiety — so a nervous polygraph result doesn't predict a P300 result. Clean slate, different technology.
What Irish Clients Say
★ 4.9 / 5 · based on 499 verified reviews across Deception Detection UK
Two-person discount made a couples test affordable
"We needed both of us tested as a couple to settle a long-running issue. The two-person price made it manageable and the examiner came to a private venue in Dublin. The result gave us the closure we needed."
Family inheritance dispute resolved before mediation
"Our family was deadlocked over an inheritance question. The test gave us an objective answer that everyone accepted, and we avoided the cost and stress of formal mediation. Worth every euro."
Discreet handling of a Dublin tech investigation
"We needed an independent UK-standard examiner for a sensitive internal investigation. The visit was scheduled discreetly within our offices and the report met the standard our legal team expected."
Dedicated visit booked for time-critical commercial case
"Booked the dedicated visit because we had a tight deadline before commercial proceedings. The examiner was on the ground within 12 days. The premium was justified for the speed and quality of the report."
Multi-person testing across business partners in one day
"Three of us as business partners needed independent testing as part of a dispute over funds. Doing all three in one day with the multi-person discount was significantly cheaper and reports were in our hands within the hour."
One Test or Two — The More You Book, The Better the Rate
All prices are fully inclusive: the examiner coming to you, the venue if we arrange one, the P300 EEG examination, analysis and the written report. Nothing is added for distance. The biggest saving comes from testing more than one person on the same appointment: each additional person is €349. Everything is priced and charged in euro, so there is no conversion and no card FX fee.
Single Test
Lie detector testing for 1
- Home visit or venue
- Full P300 EEG examination, 60-90 minutes
- Written report in your hand within 1 hour
- Full payment required to confirm booking
- Best if timing is flexible
Two-Person Visit
Most popular — save €249
- Two separate full P300 EEG tests
- Both tests same day, same venue
- Ideal for couples, business partners, families
- Individual written reports for each person
- Saves €249 vs two single bookings
Testing 5 or more people (e.g. a workplace investigation)? Contact us for a group rate.
From First Message to Written Report
Initial Enquiry
Email or contact form. We'll reply within 1 hour with a confidential call to discuss your case.
Case Review
We confirm the right option (single or two-person), draft proposed test questions, and send a written quote.
Booking & Scheduling
We agree a date that suits you and confirm it in writing; full payment then secures it. Venue: your home, or a private room we book in your town.
Testing in Ireland
The examiner arrives at your home or the venue with the 4-channel EEG kit. Pre-test interview, the P300 examination (60-90 minutes) and a post-test debrief, all on the same day.
Written Report
Formal written report with waveform analysis and findings Issued to you only.
Common Questions From Irish Clients
We come to you. Wherever you are in Ireland, the examiner comes to your home or to a private venue we arrange nearby, booked in our company name. We are a UK company with an Irish address in Longford; the test happens in your town, with the same examiner, the same 4-channel BrainBit EEG kit and the same written report as our UK clients. Tell us the dates that suit you and we check the diary before you pay anything.
Yes, and it is the most popular way to book in Ireland. Each additional person on the same visit is €349, because the examiner is already with you and the venue is already covered. Two tests on the same day cost €949 rather than €1,198 as two single bookings; three cost €1,298. Five or more, get in touch for a group rate. Ideal for couples, business partners, family members in a dispute, or staff in a specific-incident investigation.
A traditional polygraph measures anxiety: breathing, heart rate and sweat. P300 EEG measures a brain response that appears when your brain recognises a detail you have seen or done before. It asks a different question, recognition rather than stress, so a nervous but honest person is not penalised for being nervous and a calm person is not credited for being calm. The published research on the method is summarised in the note at the foot of this page.
Strictly confidential. Tests take place in private booked venues. Reports are issued only to the paying client. We operate under GDPR and do not share, store or disclose any case information to third parties without written instruction. Nothing is filed with any authority, employer or family member unless you explicitly ask us to.
Very common reason for booking us. Traditional polygraph results can be distorted by nerves, medication, medical conditions, or poor question design — a genuinely truthful person can fail simply by being anxious. P300 EEG measures something different: brain recognition, not anxiety. A P300 test on the same underlying facts can provide a clear, independent second result.
Online bookings are priced and charged in euro by card, so your bank makes no conversion. Enquiries can also be settled by SEPA, Wise or bank transfer. You can book and pay online, or ask a question first, agree a date, and pay once it is confirmed in writing. Full payment secures the appointment. Every quote and invoice carries our full company details: DadLink Technologies Limited, trading as Deception Detection UK, company number 16161444, with an Irish address in Longford and a UK office in Cheshire.
Tests are conducted in English. If the subject needs an Irish Gaelic or Polish interpreter, we can arrange one locally — just raise this at the enquiry stage so we can factor it into scheduling.
If you are in Belfast, Derry or elsewhere in Northern Ireland, you are covered by our UK service at the same £499 rate, booked through the UK booking page rather than this one. Book directly through our UK booking page.
What You Get After Your Lie Detector Test
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.
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 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.
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.
Read full case
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 cheating 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 caseBuild Your Test Questions
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:
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.
Your Examiner
Every lie detector test is conducted by a certified, experienced specialist — never a subcontractor.
Mathew Oneill
Founder & Lead P300 EEG Examiner — UK and Ireland
Mathew has conducted P300 EEG examinations across corporate, legal and private cases throughout the UK and Ireland. He holds specialist certification in P300 brainwave analysis and operates the 4-channel BrainBit EEG system used on every appointment.
Mathew has spent over seven years building, testing and refining P300 EEG protocols — analysing thousands of brainwave recordings to improve detection accuracy and develop the evidence-grade reporting system used on every case today. That depth of hands-on research means he understands the difference between a result that satisfies curiosity and one that holds up to professional scrutiny.
All appointments are led personally by Mathew or a directly supervised member of his core team — never handed off to an unknown subcontractor. You will be told exactly who is attending before the day.
- ✅ P300 EEG Certified
- ✅ Full UK DBS Checked
- ✅ Legal Report Writing
- ✅ Professional Indemnity Insured
- ✅ HR Investigation Experience
- ✅ ICO Registered (UK GDPR)
- ✅ Trauma-Informed Practice
- ✅ 600+ Tests Conducted
"Most clients arrive nervous — they think they're walking into something clinical and intimidating. My job is to make the process calm, clear and fair for everyone in that room. The science should speak for itself, and a good examiner makes sure it does."
— Mathew Oneill, Founder & Lead Examiner
P300 EEG Testing Across Ireland
Tap your town for local pricing, home-visit and venue options, common case types and FAQs specific to your location. Same examiner, same kit, same written report.
Don't see your town? Get in touch — every county in Ireland is covered, at your home or at a venue near you.
Ready to Book Your Test in Ireland?
Speak to us directly or book online in two minutes. Every conversation is strictly confidential from the first message — and remember, testing two people on the same visit is £799 (saves £199), with your written report in hand within the hour of finishing.