020 3129 5594 , 020 3129 7074


Nationwide Polygraph Test coverage through Accredited Examiners. specialising in private cases from Infidelity, Theft to False Accusations and Sex Offence Testing. Providing excellence through strict code of conduct and helping to regulate the standard of commercial lie detector tests across the United Kingdom.



Our relationship specific test is ideal to resolve accusations of cheating, adultery or to prove or disprove sexual contact

Marriage breakdwons

Historical Issues can be tested and where there is an underlying problem we can help as an alternative to marriage counselling.

Private and business theft

Our single or multiple private theft test can be used to resolve theft in a household, amongst friends or small/medium business or enterprise.

Employee Fraud

As an employer it is important to resolve fraud accusations in confidence without damage to public image.

Dispute resolution

In a business partnership or employer/employee relationship we can help to decipher and verify truth and assess credibility

Family and business disputes

In a your word against another we can test and resolve.

We now take bookings for private and business lie detector tests.

Book your Lie Detector Test today at one of our UK offices and get the private experience you need to get back to a positive life. Call 020 3129 5594 (8am to 8pm) for ad hoc advice or any queries. We will always schedule the date and time with you over the phone so you can be sure you are dealing with a reputable company and experts in the polygraph field.

Frequently Asked Questions

How Accurate is the Test?

The lie detector test has to be conducted with clinical practise and the accuracy of the test depends on four main contributing factors. Statistics from the American Polygraph Association suggest 92-95% and with recent advancements through technology the optimisation of the test continues to improve. No one should quote 100% accuracy as this would not be possible as with any scientific testing there are variances which need to be considered and suitably provisioned for.

4 Main Factors to Determining Accuracy of the Test

  1. The Person being examined – Must make sure that they are complying with our pre-test requirements
  2. The Environment – Needs to be void of disturbance or distraction
  3. The Examiner – Needs to be APA accredited and have relevant testing experience with similar cases to conduct the matter at hand
  4. The Equipment – We use state-of-the-art Layafette Instruments as used in high level global polygraph testing.

Avoid unqualified independent polygraph examiners who offer you a quick and cheap test. As with many industries there are always rogue traders or private detectives who have bought second rate equipment and not representative of a professional lie detector test. Even though you might be distressed, it is important to be mindful and understand that an accurate and correctly administered private lie detector test will verify truth and prove innocence at best, but equally administered by unqualified people could have a consequential and unnecessary extra burden on your already troubled mind.

How much does it a cost for The Lie Detector Test?

£595 Per Person all inclusive of pre-test consultation, polygraph test, fully verified reports, venue or travel if required.

Where do I come for the test?

You can either come to our offices in London by appointment or we can arrange a private room at a location near to you in most towns and cities where we conduct tests. The cost is already included in the price.

What if the person being tested is on medication?

If they are on medication then you must inform us when booking so that we can advise whether they are suitable. In most cases if they are on any medication which is not specific to physiological changes then we advise you to take your medication as normal as we wish them to arrive for testing in their ‘normal’ self.

What about drugs, alcohol or pregnancy?

Regarding drugs and alcohol the person being tested must be clean for 24 hours prior to the test. As for pregnancy, we will not test anybody who is pregnant until 8 weeks after birth.

Can I pay cash on the day?

No, as with any professional service, there are costs incurred for us to setup and then conduct the test. We would always require a non-refundable deposit of £300 when you initially book and then the remaining balance paid by 24 hours before the test. Only electronic payments would be accepted either via PayPal, Debit or Credit card.

Where will the test be conducted?

We conduct all Lie Detector Tests at either our studio office in London or at our network of REGUS offices which are available in most major towns and cities. When you make a booking with us via the website you will be automatically associated to the nearest office and when you book over the phone we will disclose the location once the booking has been confirmed. This is as a safeguarding measure as we often have people checking on others to see if they are being tested.

How does it Work?

The Lie Detector Test is both a psychological and physiological test for signs of deception. So when you are into the test enviroment you are monitored by a trained examiner and with technological instruments to measure your responses to questions which are set by the examiner and often proposed by the client or the person being tested in some cases. Such examples of questions normally end with close ended answers that are clear in one direction or the other.

Can you explain what happens on the day?

Yes, initially there is a pre-test interview which takes apporximatley 45 minutes where we would go through the background and history of the issue and discuss in detail what you wish to resolve. You would also be asked to provide photographic ID to verify who you are and if anyone else was present they could attend the pre-test interview to see which questions will be proposed.

The person then being test will go into the examination room and they will be connected to the devices and the testing would commence and be based on the questions proposed and those which the examiner feels are neccessary to achieve accurate results.

Finally, the examiner will then begin their analysis of their findings and take scores from each area of measurement. The examiner will then provide a fully verified report which is always checked by a second examiner to make sure you have something substantial to support or counter an accusation which was initially made. We with the consent of the client are happy to discuss the matter with a 3rd party person if neccessary to help the client move on after the test.

How does lie detector test work?

The process was devised initially for the purpose of measuring and detecting deception in criminal cases in the United States. With the progression of technology such as Layafette Instruments and sensory devices the test has become more rigorous and the uses are now more widely recognised for such things as relationships, business disputes and private theft cases.

The person whom is tested is connected to a number of devices which monitor physical signs of deception whilst the examiner will conduct psychometric testing to counter and further build a detailed profile of the test subject. You will generally be asked a number of questions both specific to the issue and more broadly targeted at profiling.

Once the examiner is happy they have gathered enough information to draw conclusions then the test will be stopped and the examiner will use an advanced algorithmic approach to determine if there are true signs of deception. The skill and experience of the examiner are fundamental to the success rate of the test. The equipment also needs to be regularly calibrated and the environment of the test needs to be suitable.

How to prepare for a Lie Detector Test?
We are focused on transparency with our clients and wish to disclose to our community what we feel are the fundamental elements in preparation for clients and those being examined alike. The polygraph and psychometric lie detector tests when conducted by accredited examiners operating under a strict code of ethics and under a stringent operating framework should yield accurate and substantial results to resolve issues. There is an importance on the client to be aware of the difference between the kind of preparation that can be productive and counter productive in resolving their issue using the Lie Detector Test methodology.
How to prepare for a Lie Detector Test as a Client
The client in affect is the person booking the test and this can quite often be a distressed partner, stressed individual feeling that someone has been evasive or someone who has explored all other avenues but cannot find a reasonable solution. It is important to remain calm as there are a number of companies which we identified in previous journals to raise awareness that are awaiting to exploit the state of mind of the client to close a quick sale. We do not recommend you make a decisions whilst under the stress of the conflict that may have arisen but better to make sure you are in a state of awareness either by waiting til the situation has calmed down or by making a non-commitment booking or enquiry available on our website.
Once you are certain you are happy to proceed then you should inform the person whom will be tested if it is not indeed yourself as in any case the subject person must be willing to take the test and understand that your are committed to have once conducted. There is a suitability test on the website where you can also check that the person you wish to have tested passes the basic pre-requisites although in any case we do not recommend you book the test and then wait for their approval as it would mean you would lose a deposit.
The next important element is the questions which are asked, we are often queried whether the questions can be discussed with the subject person i.e. should they know what they are going to be asked in the test? and there is no issue in them having awareness or despite the online articles such as “how to cheat a polygraph test” as we beg to differ with the use of psychological techniques in addition to the polygraph its not a case of simply beating the machine.
Finally, when you go to book your test make sure that the you speak directly to the examiner before the test as there should be no reason a non-agency direct examiner would not wish to speak to their client beforehand to prepare for the test. There is a link in the footer to check the credentials of the examiner on our website. After speaking to them you should feel assured in knowing the process and what will take place on the day of the test.
How to prepare for a Lie Detector Test as the person being tested
If you are the person being tested the time between a booking being confirmed and the test taking place can be a daunting face whether you have been deceptive or are looking to disprove accusations which have been placed on you. There is a lot of fake information online which can lead you to believe that you can cheat the test but just to clarify firstly that there is no method to beat the test as above because each test is unique and focuses not just on physical signs of deception but also psychological testing. You will never be 100% sure of all of the questions that an accredited examiner will ask you but they will be focused on verifying the truth rather than a spin of words to catch you off guard. The test itself offers key provisioning within the framework for such suppressed emotions as anger, depression or anxiety and again you should not worry about these creating an invalid result but just make sure the person booking has used a reputable company and spoke with the examiner. In some cases and always at the beginning of the test the examiner will take time to reassure you of the process at hand. You can also request with the person booking to be aware of the questions they wish to ask and know that this will not make any difference to the test but may make you feel more relaxed in the time from when the test is booked to the test day.
On the day of the lie detector test you should be calm and reassured that the process is proven and that if are truthful and calm with the examiner then there would be no reason for anything other than the truth to be uncovered. People often remark that the person being tested is very witty and clever and could trick the examiner but this is misunderstanding as the test is procedural and cannot be personally manipulated by any one individual.


4 Main Factors to Determining Accuracy of the Test

Main Contrbuting Factors to Conduct an Accurate and Accredited Level of The Lie Detector Test

The Person being examined

Must make sure that they are complying with our pre-test requirements

The Environment

Needs to be void of disturbance or distraction

The Examiner

 Needs to be APA/EPA accredited and have relevant testing experience with similar cases to conduct the matter at hand

The Equipment

 We use state-of-the-art Lafayette Instruments as used in high level global polygraph testing.

Take the first step… Schedule your Private Lie Detector Test

If you are happy to plan your private lie detector test with us, then you can make a no-obligation lie detector test booking using the options below and then we will contact you to finalise the arrangements based on agreeing a date and time and your preferred suitable location.

London based, Nationwide Coverage. Specialising in Private Cases from Infidelity, Theft to False Accusations and Sex Offence Testing.

We are a strictly confidential private lie detector test provider that delivers professional polygraph testing to clients across the United Kingdom from our London Office. We help people to resolve private matters including infidelity, relationship issues, family disputes, addiction and more.

Phone: 020 3129 5594

Customer Service Team (All UK based, trained and experienced with private matters). Lines open 8.30 am to 8.30 pm Monday to Saturday


Each person has their own distinct characteristics and persona and therefore we base our approach on two main areas of analysis.

Polygraph Examination: The physiological signs of deception are measured using various technological instruments which monitor bodily responses to proposed questions. e.g. breathing, sweat, eye movement.

Psychometric Examination: Our examiners are vastly experienced in the field of forensic psychology and the skill of the examiner in determining and detecting the deception are paramount.ccf

The actual test itself should take no more than 60-90 minutes. However, as with any good clinical practise there is extensive preparation required to safeguard the examiner/test person and provision for all of the variables before the test is conducted.

​​Our end to end process is client focused and the test environment, customer care and highest level of accuracy in Lie Detector Tests is at the forefront of our approach. Through these core principles and the use of accredited and seasoned examiners we are able to deliver the highest level of accuracy as quoted by the APA of 95-98%. We are focused on detecting deception and verifying the truth in all circumstances where testing is suitable.

Qualified Examiners

Human detection is fundamental and underlines the importance of the test being conducted by a qualified and experienced examiner.

Case by Case Analysis

Every scenario is different and an in-depth analysis is required before drawing conclusions. Utilising all of the collated information and following a professional methodology.

Physiological Metrics

The latest technical instruments measure many bio metrics e.g perspiration, heat rate and breathing patterns


Combined polygraph and psychometric lie detector test as often used on TV shows such as Jeremy Kyle and Trisha.

“By using our private lie detector test you can safeguard your future and then plan your next steps accordingly. Lies breed lies and can cause confusion in addition to unnecessary mental strain. If you are unsure and wish to find out more, please feel free to contact us”

We can provide private lie detector tests by professionally qualified examiners at our offices in Oxford or at discreet private office locations across the UK through our pre-mapped network of suitable nationwide locations. Our services are delivered by APA Accredited Examiners who have carried out rigorous training at the world renowned accredited polygraph schools. Our focus is on helping people to resolve private issues from relationships, false accusations to historical abuse and private theft. We do not conduct residential tests as in our opinion the test should be conducted in a controlled and suitable environment which is void of disturbance. Full and comprehensive reports are provided to further justify our findings and we provide them with every test that we conduct.

Discover the Truth

Our advanced polygraph test is accurate and professional. Our experienced examiners test the psychological signals with our state-of-the-art equipment measuring the physical signs. We always provide you with fully verified reports to substantiate our findings. Reports are always checked and verified by a second examiner so that you have a complete qualified opinion.

Beyond Reasonable Doubt

Our private lie detector can support you to discreetly resolve any intimate issues which may be causing a strain on your relationship and you can be safe in the knowledge that our work is strictly confidential. Our examiners specialise in resolving infidelity issues – whether specific to an accusation about someone in particular or historically trust problems.

All our examiners have graduated from courses approved by the American Polygraph Association – the leading professional polygraph organisation in the world. We carry out annual internal checks of their education progress and professional development. 

Private, Discreet and Confidential Lie Detector Tests

Helping Clients resolve private issues with Lie Detector Tests delivered by Qualified and Accredited Examiners through various discreet locations across the United Kingdon

We work directly with our examiners who are all accredited and experienced. We are professional experts not an agency.

We are strictly confidential so please provide as much relevant information as possible and we will do our best to assist you. We aim to respond to all enquiries within 2 hours of receiving.

11 + 7 =

We conduct the test at purpose built studio type enviroments. The room needs to be void of distrubance and the test should not have any uneccessary distractions such as people walking by, loud noises in adjacent rooms or anyone else present but the examinee and the examiner.

Office Hours
Monday to Sunday 8.00 am to 8.00 pm
Voicemail Service available 24/7

Phone: 020 3129 5594, 020 3129 7074
E-mail: office@liedetector.uk

Company number: 11167417

We provide polygraph lie detection services across the whole of the UK.

Registered Office:
Unit 320 Victory Business Centre
Somers Road North
Portsmouth, United Kingdom

0203 129 5594

Contact us at anytime at 0203 129 5594 to discuss polygraph testing for your case



Areas covered across the United Kingdon

 Studio Environment in London and Regus Offices Throughout the UK

This list below is not exhaustive but outlines the areas most frequently visited by the professional examiners. For Scotland and certain remote locations there is an additional charge based on travel and expenses. The offices which we conduct the tests near to a client are based on previous use and verified as being suitable. In most cases there are suitable rooms available within 10 miles of UK mainland addresses. In some certain circumstances where there is not a suitable venue, we may discuss with the client various locations within their vicinity and make a decision based on the contributing factors to conduct the test professionally.

The nature of our work means we do not disclose details of the specific accredited examiners which actually conduct the Polygraph Test. You can visit the the American Polygraph Association leading associated members lists to be confident that the examiner conducting the test is a qualified person and not a private detective using aged equipment.

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