About us
Eight accredited examiners. One standard.
Our purpose goes beyond the examination itself — to restore clarity, rebuild trust and uncover the truth when it matters most. Every test is conducted with precision, empathy and absolute respect for confidentiality. Everything below about Lie Detector UK is checkable — the examiners are named, and both registers are public.
Why us
What you are actually choosing between
Everyone in this field claims accuracy, discretion and professionalism. These are the six differences that can be checked rather than claimed.
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01
Eight examiners, not one
Most UK polygraph "companies" are one person with a website. Eight accredited examiners means an appointment within days rather than weeks, cover when someone is ill, and a colleague to review a difficult chart — which is not available to a sole trader however good they are.
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02
Our own private offices
124 of them, across England, Scotland and Wales. Not hotel rooms booked by the hour and not your kitchen table: the environment is part of what makes a chart scoreable, and a room with interruptions in it produces a result that is easier to dispute.
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03
An examiner you can check
Accredited by the American Polygraph Association and registered with the British Polygraph Society, both of which keep public registers. A private investigator offering "lie detection" is usually neither, and that is the single most useful thing to verify before paying anyone — including us.
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04
One price, published
£495 all inclusive in England and Wales, on the website rather than quoted case by case after you have explained your situation. The £150 deposit and the fact that it is non-refundable are stated before you book.
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05
A validated format, or nothing
The UTAH and AF/MGQT formats, run as the research specifies, with three relevant questions. Voice stress analysis, eye-tracking and phone apps are sold using the same words and are not validated techniques — we do not offer them at any price.
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06
A written report, not a verdict at the door
You are told the result verbally before you leave, and the written report follows within 24 to 48 hours setting out the questions as worded, the format used and the scoring behind the conclusion. It is a document someone else can follow, which a verbal assurance is not.
Mission and core values
What we hold ourselves to
01
Truth through science
Advanced polygraph instruments and scientifically validated methodologies, with accuracy rates the practice states as exceeding 95%. Examiners retrain continuously so results stay reliable, impartial and defensible.
02
Uncompromising confidentiality
Examinations are carried out in secure, private offices under strict data protection protocols. Nothing is shared or disclosed without explicit written consent.
03
Ethical standards without exception
The professional codes of the British Polygraph Society and the American Polygraph Association are upheld in full — integrity, neutrality and respect for the result, whatever it is.
04
Empathy and professional care
People rarely arrive here on a good day. Examiners provide a calm, supportive and non-judgemental environment, and guide each client through the process with dignity.
Who oversees the work
Marc Bester
Chairman and Director of the British Polygraph Society, and the examiner who oversees every case this practice takes. Over a decade conducting polygraph examinations across multiple jurisdictions, in psychophysiological credibility assessment.
British Polygraph Society
Director
Helps lead the UK's original and most respected professional polygraph association.
American Polygraph Association
International member
Membership of the world's most influential and authoritative polygraph organisation.
Information Commissioner’s Office
ZB150442
Registered for UK data protection, covering GDPR compliance for all client data.
European Polygraph Association
Member
Supporting examiner development and scientific publication across Europe.
International Society of Polygraph Examiners
Member
Promoting ongoing research, ethical conduct and examiner accountability.
Association of Certified Fraud Examiners
Member
The world's largest anti-fraud organisation, adding investigative depth to the practice.
Worldwide Umbrella Body of Polygraph
Member
A coalition of examiners committed to maintaining integrity across borders.
Southern African Professional Polygraph Association
Member
A regulatory body supporting examiners across Southern Africa.
Peak Credibility Assessment Center, USA
PCSOT certified
APA-accredited training and advanced continuing education in the United States.
Our examiners
Eight examiners. Every one of them vetted, accredited and named.
Accreditation is the only thing standing between a real examination and an expensive guess. Here is what ours actually holds — ask any provider for the same.
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400+Hours of full-time training at an approved school
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30 CEUContinuing education every two years to stay certified
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5,000+Private examinations conducted, per examiner
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APA / BPSActive membership of the recognised professional bodies
Our examiners are registered with the British Polygraph Society and the American Polygraph Association. Both keep public registers you can check yourself.
How the practice works
The things you can check on the day
Six languages
Examiners fluent in English, Spanish, Polish, Ukrainian, French and German, so nothing is lost in the pre-test interview.
Results in 24–48 hours
Flexible scheduling including last-minute bookings, with the written report delivered within one to two days.
Three relevant questions
Each examination is capped at three carefully formulated relevant questions. Fewer questions is what keeps a result clear.
Computerised instruments
The latest computerised polygraph systems, with real-time analysis rather than paper charts read after the fact.
Discreet home visits
Where a test is conducted at your home, examiners travel in unmarked vehicles and wear smart casual clothing without logos.
An independent team
Not a call centre or an agency booking out subcontractors — dedicated offices, named examiners, fixed pricing.
Published policy
The operating framework
The rules the practice runs by, published in full rather than described. Six areas are summarised below; each one is a section of the document, and the document is the version that governs.
01
Confidentiality
Nothing about a client or their case is disclosed without their explicit consent, except where the law requires it. That is the whole of the exception — there is no clause allowing disclosure to a partner, an employer or a family member who asks.
02
Accreditation and training
Examiners are accredited by the American Polygraph Association and trained by internationally recognised organisations, and are required to undertake continuing professional development rather than qualifying once and stopping.
03
Controlled environments
Examinations are conducted in controlled conditions, because the environment is part of what makes a chart readable. A residential address is used only where the examiner judges that the same conditions can be met there.
04
Code of conduct
Aggressive or threatening behaviour towards an examiner is not tolerated, and any attempt to bribe, influence or threaten one results in the police being notified. It cuts both ways: the same document governs how examiners conduct themselves.
05
Test questions
Only relevant, closed-ended, issue-specific questions, and deliberately few of them. Limiting the number is not a convenience — it is what keeps the result credible, and it is why extra questions cannot be added on request.
06
Payment, deposits and cancellations
A non-refundable £150 booking fee at the time of booking, with the balance payable 48 hours before the appointment. We contact clients before that deadline, and may reschedule where something unforeseen happens.
Terms of service
What you are agreeing to
The service agreement is signed before an examination begins. This is what it says, in plain English — put here rather than left to the small print, because two of these are worth knowing before you arrive.
It is voluntary, and it stays voluntary
Both the client paying and the person being tested agree without duress, coercion or promise of reward, and the examinee is free to take legal advice — or advice from anyone else — before agreeing to anything or signing a form.
The recording is deleted within 24 hours
The interview and all three phases of the examination are audio and video recorded for quality purposes, and the terms commit to deleting those recordings within 24 hours of the test unless the client asks in the pre-test for them to be kept.
There are four possible outcomes, not two
No Deception Indicated, Deception Indicated, Inconclusive where the physiological reactions are inconsistent, and Purposeful Non-Cooperation. A test that cannot be scored is a named result in the agreement rather than something discovered on the day.
Conduct, on both sides of the desk
Threatening or abusive behaviour, or deliberate manipulation during testing — controlled breathing, exaggerated movement, general non-cooperation — ends the examination. Nobody is required to agree with a result, and the terms say so; they govern behaviour, not opinion.
Both policies are published in full
Summaries are for reading; the documents are what govern. Where this page and a document differ, the document is correct.
Terms and conditions of service · Operating framework · Frequently asked questions
Coverage
124 private offices, vetted for discretion
Every site is chosen for privacy and for a controlled testing environment. Scotland is available — please call first to confirm dates and pricing.
