Project Description

Polygraph/Lie Detection

Reliable service provided by experienced international investigators

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Low Cost Polygraph Lie Detector Testing

Proving Innocence & Detecting Deception

Research Associates offer Polygraph services throughout the UK, Europe and Worldwide. We are members of the British and European Polygraph Association (BEPA) and specialise in providing competitively priced, highly confidential polygraph testing for Private Individuals, the Corporate and Business sectors, as well as Government Departments.

What is a Polygraph?

A polygraph (popularly referred to as a ‘lie detector’) is an instrument that measures and records several physiological responses such as blood pressure, pulse, respiration, breathing rhythms, body temperature and skin conductivity (sweat gland activity) while the subject is asked and answers a series of questions, on the theory that false answers will produce distinctive measurements. The polygraph measures physiological changes caused by the sympathetic nervous system during questioning. In the UK, the polygraph is typically utilised for relationship issues – including cheating spouses or partners, theft, sexual abuse and confirmation of innocence. It is now regularly used by UK government departments, as well as numerous international companies in the area of integrity and lifestyle checks.

All our polygraph examiners (lie detector examiners) are very discreet and highly experienced, so please be reassured that when you book a test with us it will be handled with great sensitivity and discretion.

Polygraphs are in some countries used as an interrogation tool with criminal suspects or candidates for sensitive public or private sector employment. The UK government has now initiated polygraph examinations in its most sensitive areas of investigation and is conducting clinical trials into the ongoing use of polygraphy. The use and effectiveness of the polygraph historically has been controversial, with its validity subject to criticism. Critics previously argued that even taking into account high estimates of the polygraph’s accuracy (up to 98% accurate), a significant number of subjects may appear to be lying and would therefore unfairly suffer the consequences of “failing” a polygraph test. However, Research Associates’ examiners use only the very latest computerised instruments to accurately evaluate results and are fully conversant with the very most up-to-date techniques which help secure reliable successful results, once again ensuring precision in all reports.

Our UK lie detector experts are of a standard whereby they have undertaken specialist polygraph training for Post Conviction Sex Offender Testing (PCSOT) on behalf of the British/UK government.

In a UK court case (lawsuit), an involved party may order a psychologist to write an opinion based on polygraph results to substantiate the credibility of its claims. However, the party must bear the expense themselves, and the court weighs the opinion like any other opinion the party has ordered. UK courts themselves do not order or pay for polygraph tests. In most cases, polygraph tests are undertaken voluntarily by a defendant in order to substantiate claims and therefore provide documentary evidence.

Research Associates undertake tests worldwide. We offer flat fees within the M25 area of London and at other UK locations. Fees may be based on specific travel time and costs for some remote areas and where overseas travel is involved.

Our all-inclusive price for a single polygraph test, within the UK, is the very best you will find – guaranteed.

The most straightforward way to fully understand the process and be given the price for your Polygraph Test is to contact our Polygraph department. You will not find a more competitive inclusive price.

Fully Qualified Examiners

There are very few fully certified, accredited polygraph examiners currently operating within the UK and it is universally agreed that a skilled operative is the essence of any reliable polygraph test. Research Associates have access to all certified UK polygraph examiners and only employ examiners with internationally recognised accreditation in the use of a Polygraph.

We are also founding members of the British Polygraph Network which ensures the highest possible polygraph testing standards; being part of the British Polygraph Network ensures a client’s total confidence in our accredited testing process.

One of Research Associates’ principal partners was one of the first people to qualify in the first private polygraph academy in the UK, the British Polygraph Academy (BPA), which is both approved and accredited by both the American Polygraph Association (APA) and the British Accreditation Council (BAC). Our principal is also a full member of the British and European Polygraph Association (BEPA).

Membership of the British and European Polygraph Association is strictly regulated and controlled, which ensures that the examiner’s skills and expertise are recognised internationally. This also guarantees that your examiner is both fully qualified and that they are constantly updating their skills to incorporate the most advanced techniques as well as assuring a client’s total confidence in our accredited testing process.

It is worth noting that the British Government now employs polygraph testing. Since polygraph examinations became digital/computerised, the results of examinations have become uniform and more measurable, in terms of standards, procedures and techniques, and results have therefore become increasingly scientifically based (and the subject of significant meta-analysis).

Of interest, the British government have been conducting clinical trials (which have recently concluded) into the use of polygraph examinations and are currently running proactive programmes using polygraph examinations in very sensitive areas of regional and national government (including counter-terrorism programmes and paedophile re-offender units). The UK government now recognises that polygraph testing delivers extremely high rates of accuracy.

Our examiners only employ the very latest interview and analysis techniques and equipment to ensure the highest rates of accuracy.

International Capability

Research Associates are realistically able to provide Polygraph services in all parts of the world. Examiners have been deployed globally, including areas of current political turmoil or war-zones. Language is never a hindrance as we have examiners proficient in working through interpreters, who need to be independently schooled over a three hour period to ensure disciplined examination results. Our International Polygraph Examiners include the very most experienced world wide experts and simply cannot be bettered. We invite you to speak with Research Associates’ principal, Paul Hawkes to discuss your matter in full.

Private Clients

Research Associates specialise in using the polygraph to verify truth or deception within personal and family matters. The need for sensitivity is paramount when addressing private issues that affect intimate relationships. Our examiners are sensitive to these requirements and offer friendly, unbiased solutions to the presenting problems.

Dealing with family, relationship or other personal matters that are not finding resolution is typically very disturbing and upsetting. Where any issue of doubt becomes a significant concern, Research Associates will help bring peace of mind.

Our examiners are sensitive to these needs and offer a friendly, unbiased resolution to problems. Polygraph/Lie Detection Tests are typically conducted on the client’s property, at our London premises or at a location which is convenient for the client.

Research Associates also offer a range of Polygraph Services to assist with deeply private and personal matters:


Our examiners only employ the very latest interview and analysis techniques and equipment to ensure the highest rates of accuracy.

Corporate Clients

Research Associates undertake vital tests for companies and corporations considering individuals for employment, promotion, or for other reasons such as development, career planning, and fitness for duty. We also undertake more sensitive matters such as internal theft and fraud.

Some companies may only consider taking action to protect themselves against fraud and theft after the discovery of a crime. Research Associates’ aim is to support clients to help prevent loss by taking proactive steps at the stage of suspicion, helping to actively prevent serious security breaches or other potential loss. Typically working at Director level and with Human Resources Departments or independent Security Professionals.

Research Associates provide on-site polygraph testing, as well as assisting with the administrative process and offering other investigative tools, whether working within the UK or Internationally – with or without interpreters. We are fully conversant with associated legislative issues and offer corporate clients an enhanced service reflecting the more complex legal needs of corporate matters. This includes provision within our reports for an ‘impact assessment’ statement which shows the examination has been conducted both fairly and legally.

Research Associates’ enhanced service also guarantees that polygraph testing is carried out by a member of the British and European Polygraph Association (BEPA) or the American Polygraph Association (APA). We also use elite examiners further trained in ‘Practical Kinesics Interview and Interrogation’ techniques (please see below) and PEACE model interview techniques. Using Research Associates enhanced Polygraph service allows an assurance that crucial corporate matters are dealt with at the very highest level, ensuring a proficiency which translates well with the legal aspects of the presenting situation.

Research Associates is retained by numerous corporate clients requiring high level in-house security support and seeking to verify integrity and/or material facts.

As well as employee screening and fraud, Research Associates also offer a range of Polygraph Services to assist with employee matters.


Our examiners employ the very latest interview and analysis techniques and equipment to ensure the highest rates of accuracy. All our polygraph examiners are routinely assessed and receive ongoing training, however qualified they may be.

Many of our international examiners undertake specialised interpreter assisted Polygraph tests, which require highly knowledgeable and even more subtle techniques.

Polygraph Test

The test normally lasts about 2-3 hours and comprises of three component parts:

Part 1: Our examiners spend between approximately one and two hours discussing the issue with the person to be examined. They then agree the questions to be asked and the actual test procedure is fully explained.

Part 2: This is the actual polygraph testing section, where the examinee is attached to several measurement components. The polygraph examiner typically runs three tests, with a short break in between each test.

Part 3: This is the evaluation of the test sheets and reporting of results, subsequent to a post test interview.

In most cases we are able to provide the results of the test soon after it being completed. One of the main benefits of using Research Associates Lie Detection Service is the confidence in the results of your test. All our work is checked and quality controlled by highly skilled and qualified examiners within Research Associates.

When you wish to discuss your particular situation with any of our examiners, Research Associates offer free advice and will answer any questions or concerns you may have regarding the polygraph test.

Your Choice

As a valued client of Research Associates, you are also given a choice of who conducts your test, as we use both male and female polygraph examiners. Professional polygraph examinations are used as investigative tools to help detect dishonesty and innocence, to determine and identify those who may be involved. Polygraph testing is best administered in a low-profile, friendly and non-contentious interview process. As with any other investigation, discretion and professionalism are guaranteed, allowing clients to rely on us for a qualified result.

Research Associates aim is to assist you in making an informed decision as to the viability of the polygraph testing process for your specific matter. When you undertake a polygraph test with one of our examiners you will receive the highest possible professional service.

Our all-inclusive price for a single polygraph test, anywhere within the UK, is the very best you will find – guaranteed.

We do not charge any extra fees if you wish the Polygraph test to be performed over a weekend or out of hours, and tests may be arranged at very short notice to accommodate your own timetable and needs.

Note: We are legally unable to conduct polygraph testing on the following categories of individual:

  1. Any person under the age of 14 years.
  2. Any person with a known history of mental or significant psychological illness.
  3. Any woman known to be pregnant at the time of testing.
  4. Any person under threat of violence.

Booking Conditions/Terms:

A non-refundable deposit is required to book UK Polygraph examinations and the balance is required before the day of testing. Should an examinee confess to any of the agreed test questions prior to testing or during the pre-test interview, the polygraph examination will not proceed. Any pre-booked examination(s) will be charged in full (with no refund applicable). As all polygraph examiners need to pre-book their diaries, we require a clear 24 hours notice should a test need to be rescheduled or cancelled for any reason.

Payment is usually processed via credit or debit card (as we no longer take payment by cheque for this service).

Our all-inclusive price for a single polygraph test – anywhere within the UK – is the very best you will find. Call Research Associates: 020 7243 1000:

Since every investigation is essentially unique and because of the delicate nature of all we do, before commencement of any assignment we suggest you call and speak with us. We find by talking through the outline of your current circumstance in confidence and asking just a few non-intrusive questions, we become fully able to comprehend your specific requirement. This will also enable you to get to know how we work and for us to give a clear plan of action, costs, turnaround time – and to decide whether you wish to instruct us.


Caution to the Person Being Tested:

No alcohol should be taken 24 hours before the day of testing. No illegal drugs should be taken 24 hours before the day of testing. Where possible, a good nights sleep should be enjoyed the night before testing.

BEPA – Our Code of Ethics

Rights of Examinees:
A member shall respect the rights and dignity of all persons to whom they administer polygraph examinations.

Standards for Rendering Polygraph Decisions:
A member shall not render a conclusive diagnosis when the physiological records lack sufficient quality and clarity. This may include, but is not limited to, excessively distorted recordings possibly due to manipulations by the examinee, recordings with insufficient responsivity, or recordings with tracing amplitudes less than that generally accepted by the profession.

Post-Examination Notification of Results:
A member shall afford each examinee a reasonable opportunity to explain physiological reactions to relevant questions during the recordings.

Restrictions on Rendering Opinions:
A member shall not provide any report or opinion regarding the medical or psychological condition of the examinee for which the member is not professionally qualified to make. This shall not preclude the examiner from describing the appearance or behaviour of the examinee. Polygraph outcome decisions shall be restricted to only those based on polygraph data.

Restrictions on Examinations:
A member shall not conduct a polygraph examination when there is reason to believe the examination is intended to circumvent or defy the law.

A member shall not solicit or accept fees, gratuities, or gifts that are intended to influence his or her opinion, decision, or report. No member shall set any fee for polygraph services which is contingent upon the findings or results of such services, nor shall any member change his or her fee as a direct result of his or her opinion or decision subsequent to a polygraph examination.

Standards of Reporting:
A member shall not knowingly submit, or permit employees to submit, a misleading or false polygraph examination report. Each polygraph report shall be a factual, impartial, and objective account of information developed during the examination, and the examiner’s professional conclusion based on analysis of the polygraph data.

A member shall not knowingly make, publish, or cause to be published any false or misleading statements or advertisements relating to the Association or the polygraph profession. No member shall make any false representation as to category of membership in the Association. All advertisements making reference to membership in the Association shall also list the category of membership.

Release of Non-relevant Information:
A member shall not disclose to any person any irrelevant personal information gained during the course of a polygraph examination which has no connection to the relevant issue, and which may embarrass or tend to embarrass the examinee, except where such disclosure is required by law.

Restrictions on Examination Issues:
A member shall not include in any polygraph examination, questions intended to inquire into or develop information on activities, affiliation, or beliefs on religion, politics, or race except where there is relevancy to a specific investigation.

What next?

Since every investigation is essentially unique and because of the delicate nature of all we do, before commencement of any assignment we suggest you call and speak with us. We find by talking through the outline of your current circumstance in confidence and asking just a few non-intrusive questions, we become fully able to comprehend your specific requirement. This will also enable you to get to know how we work and for us to give a clear plan of action, costs, turnaround time and to decide whether you wish to instruct us.

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Frequently Asked Questions

Polygraph testing is very accurate, but is not infallible. According to the American Polygraph Association, over 250 studies into the accuracy of polygraph testing have been conducted over the past twenty-five years. In the past, it has been estimated that the accuracy of the results is in the range of 90-95%. More recently research indicates the accuracy of computerised polygraph testing as now being 98%.

Yes. A polygraph instrument is a set of scientific, diagnostic apparatus, often called a ‘lie detector’. It is more accurate to refer to a polygraph instrument as a “truth verifier”.

It is normal for an innocent person to feel nervous taking a polygraph test and the polygraph examiner is always aware of this. Nervous reactions, recorded on polygraphic charts, are not interpreted by the polygrapher as any manifestation of deception. Nervous reactions differ from reactions recorded when a person is lying deliberately.

Yes. You will be informed of the exact wording of each question that will be asked during the course of your polygraph examination. There are no ‘trick questions’.

Most polygraph examination last between two and three hours. Some will last longer or shorter depending on the nature of the investigation.

The examiner typically gives a detailed explanation of the polygraph procedure and explains how the polygraph works. The examiner will also answer any questions that the examinee may have. Subsequent to the test, the examiner will then talk-through and inform the examinee of the results of the polygraph examination.

Our expert examiners are able to carry out polygraph tests in any language, using appropriate linguistic experts.

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