Polygraph Lie Detector Services

Introduction

Since almost the beginning of time man has sought to verify the truth and detect deception. The polygraph is widely accepted in many countries as the only reliable and validated means to discover lies and uncover the truth.

The UK has not traditionally embraced the polygraph with the same enthusiasm as the likes of Canada and the USA, however recent changes in social perceptions coupled with a refusal to ‘just accept’ a persons word have led to a steadily growing interest in polygraph.

Nationwide Investigations have been offering polygraph tests in the UK for many years. Nationwide Investigations only employs fully qualified polygraph examiners.

How does the polygraph work?

The polygraph works by tracing changes in a person's physiological conditioning during questioning. This is done by attaching four components to the person being tested.

Pnuemograph - Two rubber pnuemograph tubes are placed around the subject's upper chest and abdomen, these record breathing and movement.

G.S.R - The GSR or galvanic skin response is traced by placing two finger plates across the ring and index finger of the right hand. These trace changes to your skin resistance during the examination.

Cardiosphygmograph - This component traces changes to your relative blood pressure and pulse rate, it is similar to the pressure cuff your doctor uses to take your blood pressure. Once the questions have been asked whilst the subject has been attached to the components the examiner will read the generated charts to establish truth or deception.

Question Formulation - We only carry out polygraph tests using the latest question techniques. These techniques are widely used in Law Enforcement throughout the US.

Our examiners will work with you to construct questions that cover the test issue as well as meeting the strict rules that ensure maximum accuracy. The latest techniques enable a maximum of four relevant questions within a test. Anyone who claims they can ask more than 4 relevant questions is not using up to date techniques.

All questions are fully reviewed with the subject before the test commences.

Reliability - There is no doubt that the polygraph is highly reliable providing the person using it is trained and the technique they use is validated. The American polygraph Association (APA) has gathered over 200 studies on the subject, you can view further information at their web site www.polygraph.org

What can I expect from the test?

A polygraph examination usually takes around 2 hours beginning to end and consists of three different phases; Pre-test interview, collection of charts and analysis of charts.

Pre-test interview - during the pre test interview the examiner will explain how the polygraph works, discuss the issue, develop and review all questions to be asked on the polygraph test. This stage is normally the longest to complete and will take anywhere between 45-90 mins.

Collection of Charts - During this phase the subject will be attached to the polygraph. The question set which was developed during the pre-test interview will be asked 3 or 4 times.

Analysis of Charts - Once the examiner has collected the charts he will analyse the results before giving a decision as to the subject's truthfulness or deception.

How do I book a test?

If you would like to book a test, or have any questions please contact:
 

Nationwide Investigations Oxford provides polygraph services throughout Bedfordshire. So whether it is lie testing in Bedford, a polygraph test in Luton, detecting lies in Dunstable, truth testing in Leighton Buzzard, a lie detector test in Biggleswade, finding the truth in Sandy, or a polygraph service throughout Bedfordshire, you can rely on Nationwide.

Nationwide Investigations Oxford provides polygraph services throughout Berkshire. So whether it is lie testing in Reading, a polygraph test in Bracknell, detecting lies in Maidenhead, truth testing in Newbury, a lie detector test in Windsor, finding the truth in Wokingham, checking for lies in Abingdon, or a polygraph service throughout Berkshire, you can rely on Nationwide.

Nationwide Investigations Oxford provides polygraph services throughout Buckinghamshire. So whether it is lie testing in Aylesbury, a polygraph test in Milton Keynes, detecting lies in Slough, truth testing in Buckingham, a lie detector test in High Wycombe, or a polygraph service throughout Buckinghamshire, you can rely on Nationwide.

Nationwide Investigations Oxford provides polygraph services throughout Gloucestershire. So whether it is lie testing in Gloucester, a polygraph test in Bristol, detecting lies in Cheltenham, truth testing in Stroud, a lie detector test in Cirencester, finding the truth in Tewkesbury or a polygraph service throughout Gloucestershire, you can rely on Nationwide.

Nationwide Investigations Oxford provides polygraph services throughout Hertfordshire. So whether it is lie testing in Hertford, a polygraph test in Watford, detecting lies in St. Albans, truth testing in Hemel Hempstead, a lie detector test in Stevenage, finding the truth in Hatfield, or a polygraph service throughout Hertfordshire, you can rely on Nationwide.

Nationwide Investigations Oxford provides polygraph services throughout Northamptonshire. So whether it is lie testing in Northampton, a polygraph test in Peterborough, detecting lies in Corby, truth testing in Kettering, a lie detector test in Wellingborough, or a polygraph service throughout Northamptonshire, you can rely on Nationwide.

Nationwide Investigations Oxford provides polygraph services throughout Oxfordshire. So whether it is lie testing in Oxford, a polygraph test in Banbury, detecting lies in Witney, truth testing in Bicester, a lie detector test in Henley-on-Thames, finding the truth in Carterton, checking for lies in Thame, or a polygraph service throughout Oxfordshire, you can rely on Nationwide.

Nationwide Investigations Oxford provides polygraph services throughout Surrey. So whether it is lie testing in Guildford, a polygraph test in Croydon, detecting lies in Woking, truth testing in Sutton, a lie detector test in Kingston-on-Thames, finding the truth in Wandsworth, checking for lies in Wimbledon, Brixton, or a polygraph service throughout Surrey, you can rely on Nationwide.

Nationwide Investigations Oxford provides polygraph services throughout Warwickshire. So whether it is lie testing in Warwick, a polygraph test in Birmingham, detecting lies in Coventry, truth testing in Nuneaton, a lie detector test in Rugby, finding the truth in Solihull, checking for lies in Stratford-upon-Avon, or a polygraph service throughout the West Midlands, you can rely on Nationwide.

Nationwide Investigations Oxford provides polygraph services throughout Wiltshire. So whether it is lie testing in Trowbridge, a polygraph test in Salisbury, detecting lies in Swindon, truth testing in Chippenham, a lie detector test in Devizes, finding the truth in Marlborough, checking for lies in Warminster, or a polygraph service throughout Wiltshire, you can rely on Nationwide.

Nationwide Investigations Oxford provides polygraph services throughout Worcestershire. So whether it is lie testing in Worcester, a polygraph test in Dudley, detecting lies in Kidderminster, truth testing in Stourbridge, a lie detector test in Halesowen, finding the truth in Malvern, checking for lies in Evesham, or a polygraph service throughout Worcestershire, you can rely on Nationwide.

If you do instruct us, for your convenience, you can pay by credit card.

As part of the Nationwide Investigations Group, with an extensive network of agents, the company provides a one-stop service wherever your investigation needs arise within England, Wales, UK, Europe and internationally.