Lie Detector Investigations are an independent and leading provider of Lie Detector Tests across the UK.

Our professional and ethical polygraph examiners are accredited and certified and have over 16 years of experience within the polygraph field. Our examiners undergo continued professional development training periodically, to ensure they remain current with advancements within the polygraph field, including validated test techniques, technology and model best practices. Lie Detector Investigations are members of The American Polygraph Association, and The International Society of Polygraph Examiners.

The American Polygraph Association is a professional organisation existing to provide training, model best practices and offers professional resources for thePolygraph Association Logos continued growth of ethical and evidence-based detection of deception through the use of polygraph. The American Polygraph Association along with its members share a commitment to the public interest through the development, communication and promotion of valid and ethical polygraph practices.

The International Society of Polygraph Examiners is an association for qualified and accredited polygraph examiners offering research, publications and training seminars worldwide giving examiners the ability to continue their professional development and have access to the most recent information necessary for truth verification.


How we can help you!

We provide private Lie Detector Tests and a variety of test formats which are suitable for covering a wide range of issues, throughout the UK. Our services can be conducted at one of our controlled offices or at a location which is convenient for our clients. Should you wish to discuss your circumstances in greater detail with one of our examiners, our confidential telephone consultation is completely free. You will be given a free, no obligation quote, tailored to your needs and circumstance. For the convenience of our clients, our offices are open 7 days a week. Weekend and evening appointments are also available.

Frequently Asked Questions…

Lie Detector Investigations are a leading and independent provider of Lie Detector Tests & Lie Detection Services throughout the UK. Our accredited and certified polygraph examiners have graduate from an American Polygraph Association accredited school and have over 16 years of experience within the field. Our examiners undertake periodic training to ensure they remain current and up-to-date with advancements within the polygraph field, including validated test techniques, technology and model best practices.

Our accredited & experienced Polygraph Examiners, Carole London-Williams & Tayler London-Williams are registered members of The American Polygraph Association and The International Society of Polygraph Examiners. Our examiners undertake periodic, updated training every two years and only use the latest in validated test techniques and computerised polygraph systems.

Yes, both of our polygraph examiners are female. If however, you would prefer to use a male examiner, we are happy to refer you to another company who can accommodate your request.

Yes, for the convenience of our clients appointments can be scheduled for evenings and weekends and at a location local to you. We do not conduct tests in peoples homes however we will provide meeting rooms facilities usually within a 20 mile radius of your home.

The lie detector test records manifestations of a persons central nervous system from at least three systems in the body whilst questioned about concerns of specific issue, incident or event. The examiner will analyse the charts collected and render an opinion as to the persons truthfulness. The examination consists of four phases and will typically take between 2-3 hours.  The four phases of an examination are referred to as the pre-test, chart collection, test data analysis and the post-test phase. [Read More…]

Although no forensic testing of any kind can be guaranteed to be 100 % accurate, research gathered by The American Polygraph Association has suggested that qualified polygraph examiners can achieve an accuracy of 95% to 98% when an examination is conducted in an accurate manner, with issue-specific questions and using validated polygraph techniques.

Lie Detector Investigations work to specific key conditions, using robust policies and best practices. Each test is quality controlled by a second examiner and our written reports are also verified, unless otherwise requested by our client.

Client Testimonials

There isn’t enough words to express our gratitude and heart felt thanks for your kindness. You have given our marriage a second chance and we have never been stronger.


Thank you for the professional and friendly help that you gave us. Our marriage was almost over, we now have a future to look forward to.

Tyne & Wear

Thank you for all your help and your professional approach. It was greatly appreciated, we now have a bright future together.

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