Backed by senior forensic psychology expertise and a rigorously standardised methodology. Delivering scientifically precise lie detection services for corporate investigations and private matters across the UK.
Methodology aligned with recognised standards
Polygraph science has come a long way. Today, we are dealing with a complex discipline that combines psychology, physiology, and digital analysis.
Modern equipment uses advanced algorithms to monitor micro-variations of the autonomic nervous system that the human body cannot voluntarily control.
Independent meta-analyses report an accuracy of 90–98% on single-issue tests when administered by a qualified examiner — among the most validated of all credibility assessment methods.
In a world of ambiguities, the polygraph provides a result based on concrete data, eliminating subjectivity and offering the necessary peace of mind or legal clarity.
Expert Polygraph is a London-based practice of senior examiners specialising in polygraph and forensic truth verification. We combine formal training in psychology and physiology with a rigorously standardised examination methodology, so every assessment is objective, evidence-led and handled with complete discretion.
Senior examiners with formal training in psychology and polygraph science
Standardised methodology aligned with internationally recognised protocols
Strictly confidential service, handled in line with UK GDPR
Every situation is unique. We offer testing protocols adapted to your needs.
Personnel Recruitment
Protect your business from the start. We verify CV honesty, work history, and any hidden intentions or vices that could affect your team.
Request this servicePositions of trust
Find out if a person is loyal, if they are hiding a criminal record, addictions, serious debts, or behaviours that could affect your safety.
Request this serviceThefts, Frauds, Leaks
The fastest method to identify involved persons and clear the innocent, restoring the work environment.
Request this serviceInfidelity and Couples
A neutral and safe environment to clarify suspicions of infidelity or hidden agendas, providing the necessary basis to move forward.
Request this serviceLegal Support
Polygraph testing can support a defence or investigation by helping assess credibility and identify lines of enquiry. Results are not admissible as evidence in UK courts.
Request this serviceWhy do our clients choose us with confidence? We offer them the clarity and peace of mind that few other methods can provide.
Private
From £495
Fixed fee · no hidden costs
B2B
Bespoke pricing
Tailored quote based on scope
Legal
Bespoke pricing
Tailored quote based on scope
Transparent, fixed pricing — your fee is confirmed in writing before your appointment and covers the entire examination, with no hidden charges.
In practice, no. A qualified examiner applies continuous monitoring and control techniques, and standardised protocols are specifically designed to detect countermeasures, making the test extremely difficult to defeat.
Not at all. The sensors are non-invasive and only monitor the natural physiological reactions of the body.
On average, a test takes between 2 and 3 hours, including the preliminary discussion (pre-test) and result analysis.
Confidentiality is the cornerstone of my profession. No information leaves the office without your explicit consent.
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