I-Spy provides professional and accurate Polygraph Examination services (commonly known as Lie Detector Tests) across Greater London. We offer flexible testing locations, including home and office visits, at no additional cost.
Our Polygraph testing can help with:
- Suspicions of dishonesty or deception
- Missing items or suspected theft
- Relationship trust issues (Is my partner cheating on me?)
- Paternity concerns (Is the baby mine?)
- Family or friendship conflicts
- False accusations where you need to prove your innocence
Based in West London, we have a team of over 35 experienced UK polygraph testing specialists available at short notice. We help law firms, corporates, public services, and private individuals daily in London.
We can also provide polygraph testing abroad as well, include the USA, Australia, Canada, Spain, Italy, France, Portugal, Greece, South Africa, and UAE (Dubai).
Why choose I-Spy Detectives for your Polygraph test?
Our Commitment to You
We guarantee complete confidentiality and discretion. All polygraph test data and notes are securely deleted after providing you with your written report, and we maintain strict privacy protocols to protect your personal information.
Where in London can I get a Polygraph test?
We have Polygraph examination specialists operating across all of London, but our services cover the entire UK, and even abroad. Wherever you are based, we strive to accommodate your preferred location. Our experienced polygraph examiners are often available for short-notice appointments, ensuring you get the answers you need when you need them.
We have clients in Soho, Covent Garden, Mayfair, Marylebone, Fitzrovia, Bloomsbury, Holborn, City of London, Clerkenwell, Shoreditch, Westminster, St. James’s, Piccadilly, Leicester Square, Chinatown, Southbank, Lambeth, Waterloo, Bankside, Borough, Greenwich, Croydon, Bromley, Harrow, Sutton, Kingston upon Thames, Richmond-upon-Thames, Hounslow, Ealing, Hillingdon, Brent, Barnet, Enfield, Haringey, Waltham Forest, Redbridge, Havering, Barking and Dagenham, Newham, and Lewisham.
Need an experienced Lie Detector Test in your location? We come to you.
No matter where you need a lie detector test, we can deliver. Need an emergency or same day polygraph test? No problem. Call us to arrange your polygraph on 0800 002 9153 or email us here: office.ispydetectives@gmail.com
When to Consider a Polygraph Test
Our lie detector services can help in various situations:
- Suspicions of dishonesty or deception
- Missing items or suspected theft
- Relationship trust issues
- Paternity concerns
- Family or friendship conflicts
- False accusations where you need to prove your innocence
- Professional or workplace investigations
The Science Behind Polygraph Testing
Modern polygraph examination combines psychology and behavioural science with advanced technology to detect deception through physiological responses. The system monitors and records several bodily responses, including:
- Skin conductivity (sweating patterns)
- Blood pressure and flow
- Heart rate
- Breathing patterns
- Body temperature
- Movement indicators
Call us to arrange a polygraph on 0800 002 9153 or email us here: office.ispydetectives@gmail.com
Our Testing Process
Initial Consultation
- Discussion of your specific needs
- Scheduling at your preferred location
- Payment arrangements
Question Development
- Working with you to identify key issues
- Crafting precise, relevant questions
- Ensuring comprehensive coverage of your concerns
The Examination
- Duration: 30-60 minutes
- Comfortable, non-invasive sensor placement
- Practice test to establish baseline readings
- Main examination with carefully structured questions
Results and Reporting
- Professional analysis of collected data
- Comprehensive written report within 48 hours
- Clear explanation of findings
Test Accuracy and Professional Standards
The American Polygraph Association estimates polygraph accuracy at approximately 87%. At I-Spy, we maintain high professional standards and use state-of-the-art equipment to ensure the most reliable results possible.
Legal Context in the UK
While polygraph results are not currently admissible in UK courts as evidence, they are increasingly used by various official bodies:
- The probation service for monitoring serious offenders
- Several police forces for voluntary testing
- Corporate investigations and employment disputes
- Internal investigations and conflict resolution
Common Applications
Our polygraph services are frequently used for:
- Personal Matters
- Relationship concerns
- Family disputes
- Trust issues
- Personal vindication
- Professional Situations
- Employee screening
- Internal investigations
- Theft investigations
- Corporate security breaches
- General Truth Verification
- Accusation resolution
- Dispute settlement
- Trust rebuilding
- Fact verification
Get in touch
For bookings or inquiries about our polygraph testing services, contact us to discuss your needs and schedule an appointment. We provide services throughout the UK and can typically accommodate urgent requests.
Trust I-Spy to deliver professional, discreet, and accurate polygraph testing services when you need answers you can rely on.
Lie Detector FAQs
What is a lie detector testing machine?
A lie detector, or polygraph machine, measures heart rate, blood pressure, respiration, and perspiration to detect physiological changes that may indicate lying.
How long does a lie detector test take?
A full polygraph test typically lasts between 1.5 to 3 hours, including a pre-test interview, question review, and the actual test.
The cost of a lie detector test varies depending on the provider, location, and type of test. On average, a professional polygraph test start at just £499. Private tests may cost more based on travel and urgency.
How sensitive is a lie detector test?
A well-administered polygraph test has a sensitivity rate of 80-90%, meaning it can often detect deception, but errors can still occur.
Can I take a lie detector test when I am on prescribed medication?
Some medications can affect how your body responds:
Anti-hypertensive medication or medications that affect heart rate and blood pressure can affect polygraph results.
Antidepressant or anti-anxiety medications can also affect how your body responds to polygraph testing.
However, the practice or “acquaintance” test that is undertaken with the subject prior to the actual lie detector test will enable the examiner to calibrate the system to reflect any bias and establish a baseline for each individual on the day of testing. It’s important that you inform the examiner of any medication you are on so that they are aware and can prevent this from providing an inconclusive result.
Can I take a lie detector test when I am using alcohol or illicit drugs?
Being under the influence of alcohol or any illicit drug such as cannabis or cocaine will prevent you from being able to sit a polygraph test and achieve a valid and accurate result. You will need to wait until you are no longer under the direct influence of alcohol or illicit substances before taking a lie detector test.
If you are a chronic user of any substance you will need to make the examiner aware as this could impact on your physiological reactions. The examiner can then utilise the practice or acquaintance test to calibrate the system to your current baseline to prevent this from impacting on your results or causing an inconclusive result.
Can I use polygraph test results in a criminal court as evidence?
The results of polygraph testing cannot at this time be used or submitted to a UK court to prove a case.
Can psychopaths pass a lie detector test?
Yes, psychopaths may have a reduced stress response, making it easier to pass a polygraph. However, modern polygraph techniques analyse multiple factors to detect deception.
Can sociopaths beat a lie detector test?
Like psychopaths, sociopaths may have fewer physiological responses to lying, but this does not guarantee they can pass a test. Skilled examiners can still identify inconsistencies.
Can a habitual liar pass a lie detector test?
Some habitual liars may show reduced stress responses, but skilled polygraph examiners use advanced techniques to counteract this.
Does being nervous affect a lie detector test?
Yes, being overly nervous can cause physiological changes that might be interpreted as deception. However, professional examiners account for natural nervousness during the analysis.
Can lie detector tests be used in court?
In most legal systems, lie detector test results are not admissible in courtas primary evidence. However, they can be used as supporting evidence in some cases.
How does a mobile lie detector test work?
Mobile lie detector services like ours means an examiner will travel to a client’s location. The test is performed using portable polygraph equipment, following the same procedures as in a testing centre.
Are lie detector tests available for couples?
Yes, private lie detector tests are commonly used by couples to resolve trust issues related to infidelity, honesty, or past actions. We are helping couples to solidify their relationships daily across the London area.
Can a lie detector test detect infidelity?
A polygraph test can help determine truthfulness in a cheating-related inquiry, but it cannot prove absolute guilt or innocence—only indicate deception.
What happens if you fail a lie detector test?
Failing a polygraph does not automatically mean someone is lying. Examiners consider test conditions, anxiety levels, and response patterns before concluding deception.
Can police require someone to take a lie detector test?
No, in most countries, police cannot legally force someone to take a polygraph test. Participation is voluntary.
Can a lie detector test be used for hiring employees?
In some industries, polygraphs are used in high-security roles, but most workplaces cannot legally require a polygraph for employment screening.
Call the I-Spy London office today to talk to book your lie detector test. Our staff is prepared to offer knowledgeable consultation and prompt, professional service.
