Lie Detector Test Case Studies UK — Real Results

Real-world applications of our 8‑channel BrainBit EEG system for P300 deception detection. Results consistently exceed 92% accuracy versus traditional polygraph testing.

95%
P300 Accuracy Rate
32
Documented Cases
51%
Polygraph Average
£499
Starting Price

Case Studies & Research

32 documented P300 EEG investigations across corporate fraud, insurance, infidelity, family disputes, identity verification, and research. Filter by category or browse all.

Corporate Investigation • December 2024

Tech Company Internal Theft

Employee suspected of stealing proprietary code. P300 EEG detected deception at 94% vs polygraph's 52%. Subject used countermeasures that defeated polygraph but not neurological analysis.

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Data Breach • August 2024

Insider Threat Investigation

Financial firm suspected employee selling client data. EEG testing of 5 suspects identified perpetrator with 94% accuracy through involuntary P300 recognition responses.

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Workplace Fraud • 2025

Contractor Expenses Fraud — £47,000

IT contractor falsified 18 months of expenses. P300 EEG confirmed deception and — critically — cleared an innocent second suspect who had been under equal suspicion.

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Workplace Theft • 2025

Three Staff: Two Cleared, One Guilty

£23,000 stock missing from a warehouse. Three suspects tested in one day — two exonerated with documented clearance, one deception-indicated. Cleared staff given written reports.

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Workplace Fraud • 2025

Warehouse: P300 Breaks 9-Month Deadlock

Three failed audits. Eight staff tested by two examiners in a single day. Two deception-indicated, six cleared with documented exoneration. £31,500 recovered.

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Procurement Fraud • 2025

Procurement Fraud: £340,000 Over 28 Months

Fictitious supplier network over 28 months. Procurement manager deception-indicated (96–97%), finance approver cleared. £340,000 recovered. 40:1 ROI on investigation cost.

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Board Investigation • 2025

Director Misconduct: Board-Level Investigation

Non-executive director suspected of undisclosed conflict of interest, contract steering, and strategy leak. Two directors tested — one deception-indicated (96%), one cleared.

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Family Business • 2026 EEG Data

Family Business Fraud: Three Siblings

£38,000 missing from a family building company. Three siblings tested in one day. Two cleared. One deception-indicated. Includes live P300 waveform data showing the recognition response.

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Workplace Fraud • 2025

Contractor Screening: Three Red Flags Uncovered

Strong CV, clean DBS, positive references. Pre-engagement P300 screening found a false certification, a concealed employer, and an undisclosed professional sanction — in one session.

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Insurance Claim • September 2024

Fraudulent Injury Claim Detection

Workplace injury claim verification. P300 EEG revealed deceptive recognition patterns with 93% accuracy. Saved £250,000 in fraudulent payouts. Polygraph had returned inconclusive.

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Insurance Fraud • 2025

RTA Staged Accident: 5 Claimants, 5 Deception-Indicated

Five claimants from a single road traffic accident all tested in one day. All five deception-indicated. £94,500 in claims stopped. 29:1 ROI. Referral to police fraud unit.

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Insurance Fraud • 2025

Landlord Property Damage: £38,500 Claim

Tenant denied flood damage liability at a vacant rental property. Single subject tested — deception-indicated across all three probe sets. £38,500 claim stopped. 21:1 ROI.

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Private Matter • December 2024

Relationship Trust Verification

Private client seeking clarity on infidelity suspicions. P300 EEG provided 92% accurate results where polygraph showed ambiguous 51% readings.

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Relationship Study • January 2025

Partner Infidelity Detection Study — 10 Participants

10 participants from Manchester & Leeds. All partners tested — 100% accuracy. All partners subsequently admitted affairs when confronted with the documented results.

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Infidelity • 2025

Cheating Partner Confirmed: Same-Day Closure

Six months of suspicion. All four probe sets deception-indicated. The accused admitted the infidelity the same afternoon. Documented case of how P300 EEG delivers same-day resolution.

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Infidelity • 2025 Clear Result

Long-Distance Relationship: Suspicion Resolved

Eight months of suspicion across a 200-mile relationship. All four probe sets clear. The case study that shows what a no-deception result looks like — and what the distance dynamic does to ordinary behaviour.

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Infidelity • 2025

Unfaithful Partner: What Happened After the Test

14-year marriage. All four probe sets deception-indicated. Same-day admission. This case documents the four months that followed — legal proceedings, financial settlement, co-parenting established.

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Infidelity • 2025 Clear Result

When It Came Back Clear: A Falsely Accused Partner

Tom was asked by his partner to prove his innocence. He agreed immediately. All four probe sets clear. Written from the accused partner's perspective — what the experience was and what the result gave him.

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Infidelity • 2025 Relationship Saved

Couple in Crisis: Infidelity Test Saves 8-Year Relationship

Two near-separations in two months. Michael booked the test himself — without being asked. All four probe sets clear. Eight-year relationship saved. Both partners' perspectives documented.

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Infidelity • 2025

Serial Deception: Second Test Confirms Repeated Infidelity

First test deception-indicated. Relationship attempted. Four months later — new suspicion, second test booked. Second test returned deception-indicated again, with a wider scope than the first admission.

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Rehabilitation Support • August 2024

Cannabis Use Detection & Recovery Support

Individual denied cannabis use despite concerns. EEG detected deception at 94% accuracy. Recovery plan provided and employment opportunity as coding assistant. Life transformed.

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Family Testing • August 2024

Parent-Child Smoking Cessation Verification

Parent tested 21-year-old son for cigarette smoking denial. High P300 response detected deception. Son admitted and quit. Follow-up retest confirmed successful cessation.

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Private Financial • 2026

Financial Deception Within a Friendship: £6,500

Close friend disputed £6,500 in loan repayments, claiming cash payments that couldn't be verified. P300 EEG resolved the central question — dishonesty or disorganisation. Deception-indicated. Small claims judgment followed.

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Self-Referred • 2026 Clear Result

Self-Referred: Closure on False Workplace Accusation

Workplace conflict of interest accusation. Investigation closed as "insufficient evidence" — not as "innocent." 18 months later David self-referred for P300 EEG. All three probe sets clear. The result he owned.

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Family Dispute • 2026

Inheritance Dispute: Elderly Parent Suspects Family Member

£22,000 taken from accounts during 18 months of power of attorney. Test arranged through solicitor. Deception-indicated — confirmed daughter had used LPA to take money for her own benefit.

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Family Dispute • 2026 EEG Data

Missing Savings: Sibling Dispute Resolved

£8,500 missing from a joint savings account. Sister claimed cash repayment with no record. P300 EEG deception-indicated. Includes live waveform data — see what the brain's response looks like.

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Pre-Employment • January 2025

Executive Background Check: History Discrepancies Found

C-suite candidate screening revealed employment history discrepancies. EEG: 95% accuracy detecting deception. Polygraph: 59%. Prevented a costly senior hiring mistake.

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Safeguarding • 2026 EEG Data

Care Home Safeguarding: Staff Identity Verification

Applicant passed DBS and references using a slightly altered identity to conceal a barred history. P300 EEG identified the concealment — 97% probability. Includes live waveform data.

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Contractor Screening • 2026 EEG Data

Contractor Screening: Three Red Flags in One Session

False certification (document verified — knowledge didn't exist), concealed previous employer, undisclosed professional sanction. All found in a 90-minute pre-engagement P300 session.

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Legal Support • October 2024

Witness Credibility Assessment

Key witness in fraud case. EEG showed 93% accuracy identifying truthful responses where polygraph was inconclusive at 48%. Evidence accepted in civil proceedings.

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Research Study • November 2024

8-Channel BrainBit P300 Research Validation

Controlled study documenting P300 response patterns using medical-grade 8-channel BrainBit EEG. Peer-reviewed methodology with full statistical validation and calibration documentation.

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Research Study • September 2024

P300 Recognition Memory Research

Controlled study of P300 recognition responses in innocent vs guilty knowledge paradigms. 8-channel BrainBit: 95% accuracy vs 48% polygraph reliability in concealed information testing.

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Validation Study • December 2024

P300 EEG Deception Detection Validation Study

Controlled validation (n=12) comparing EEG vs polygraph accuracy. 8-channel BrainBit: 93% accuracy vs 51% polygraph. Complete calibration and statistical documentation included.

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What Our Clients Say

Trusted by hundreds of clients across the UK

★★★★★

"The EEG test gave me the clarity I needed after months of uncertainty. The case study on this site matched my situation exactly and gave me confidence to book."

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Sarah H.
Manchester
★★★★★

"Used for a workplace theft accusation. The P300 result cleared my name and was accepted by HR without question. Incredibly professional service throughout."

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Mark T.
London
★★★★★

"Reading the case studies before booking was really reassuring. Seeing real outcomes documented so thoroughly made me trust the process completely."

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James R.
Leeds
★★★★★

"My solicitor recommended EEG testing after seeing the documented case outcomes. The report we received was court-ready and completely watertight."

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Lisa W.
Birmingham
★★★★★

"The relationship case study resonated with our situation. The test resolved two years of doubt in a single session. Cannot recommend highly enough."

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Daniel K.
Sheffield
★★★★★

"Corporate investigation involving financial irregularities. The P300 EEG evidence was conclusive and saved us from a lengthy tribunal process. Outstanding."

NB
N. Barnes
Nottingham
★★★★★

"Booked after reading the smoking cessation case study — the family-centred approach is exactly what we needed. Our son responded brilliantly to the whole process."

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Paul C.
Liverpool
★★★★★

"The verified certificate with the QR verification link is a genius touch. It gave the result an authority that nobody in the room could dismiss."

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Angela F.
Bristol
★★★★★

"The BrainBit headband is nothing like the intimidating polygraph setups you see on TV. My client was calm throughout and the result was indisputable."

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R. Owen
Edinburgh
★★★★★

"The pre-test consultation alone was worth calling about. The team's knowledge of the case law and legal use of EEG evidence is genuinely impressive."

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Karen M.
Glasgow
★★★★★

"Used following a child custody dispute where false allegations had been made. The EEG evidence helped bring a fair resolution. Forever grateful."

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Tom G.
Cardiff
★★★★★

"Fast booking, professional setup and a detailed report within 24 hours. The documentation matches the quality you see in the published case studies."

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Emma V.
Newcastle
★★★★★

"Security screening context — the P300 methodology is far more rigorous than anything stress-based. The examiner's expertise was clear from the first minute."

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G. Singh
Coventry
★★★★★

"I had read every case study on this site before picking up the phone. The service delivered exactly what the outcomes described — no ambiguity, no grey areas."

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Beth L.
Leicester
★★★★★

"Same-week appointment from Brighton. The examiner travelled to us which made the whole experience far less stressful. Exceptional personalised service."

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Oliver T.
Brighton
★★★★★

"The validated accuracy data underpinning these case outcomes is what convinced me. 93% vs 51% for polygraph — the science doesn't lie even if people do."

FN
Fiona N.
Southampton
★★★★★

"Used for an insurance fraud investigation. The P300 case evidence was submitted alongside legal proceedings and was not challenged. Remarkable service."

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C. Reynolds
Oxford
★★★★★

"The case studies show real people getting real answers. That transparency is what made me choose this service over every other option I found online."

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Ian W.
Stoke-on-Trent
★★★★★

"Travelling from Aberdeen was absolutely worth it. The team are genuinely experts in this field and the result brought a very difficult family situation to a close."

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Moira A.
Aberdeen
★★★★★

"Five star service, five star technology, five star documentation. Every aspect of our case was handled with professionalism and care. Truly outstanding."

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Robert P.
Derby

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