Lie Detector Test London
The Truth, Settled in One Afternoon
In a city of nine million people, a straight answer is the rarest thing there is. A polygraph examination at Paddington Central produces one: a single agreed question, a definitive result, the same afternoon. Clients come to us to learn the truth and, just as often, to prove their own. The price is fixed at £495, and we take on a limited number of examinations each week.
Single-Issue Testing for Accurate Results
Relationship Test
from £495London life makes suspicion easy and certainty rare. One precisely worded question, tested under controlled conditions at our Paddington suite, gives you the certainty. A clear result within 24 hours, whichever way it falls, and the wondering is over.
Couples Test
from £709When both partners have questions, test together. Each of you is examined separately on the same day, on the same agreed issue, and you both see the results before you leave Paddington. It costs less than two single tests and leaves nothing hanging.
Pre-Employment Screening
from £599London businesses run on trust placed quickly: keys handed over, accounts shared, homes and children entrusted to staff. A voluntary integrity screening adds the assurance an interview cannot, before the decision becomes hard to reverse.
Theft Investigation
from £548Theft inside a household or business corrodes everything while it stays unresolved. Single issue testing settles who was involved and who was not, clearing honest staff and family members and showing you where the problem actually sits.
Secure any test today with a £199 deposit
Book the date now and the balance is collected automatically two days before your appointment — nothing to remember, nothing to pay on the day. Prefer to settle it upfront? Pay in full and you can spread the cost with Klarna at checkout.
Booked means booked
There are two ways to book a lie detector test in the UK. They are not the same.
Most polygraph websites
- 1Pay a £125 to £150 deposit, often non-refundable
- 2Fill in a form with your preferred dates
- 3Wait for a call, typically 3 to 5 days out
- 4Card only, an examiner assigned, a room hired for the day
- See the actual calendar with real free slots
- Pay in full, or secure eligible dates with a deposit
- Spread the cost with Klarna at checkout
- Confirmed the moment payment completes
- Our own offices, our own examiners, every week
A deposit here is not a fee to join a queue. It confirms a real appointment, instantly. To our knowledge, no other UK polygraph service offers instant confirmed booking or takes Klarna.
Evenings, weekends, or unable to travel?
Our home visit service brings the same examiners, the same instruments and the same instant booking to your own front room, seven days a week with the last examination starting at 8pm. Enter your postcode and see real visit times for your address.
Your Examiner
A note from your examiners: you will not find our names or faces on this website, and that is deliberate. The nature of this work means examiners here stay anonymous, and the same discretion that protects us is what protects every client we test. What we can tell you is that we are trained to police standards in interviewing, and that the words clients use most about their examinations are rarely the ones they expected to use.
"You are very calming." "Thank you so much for putting me at ease." Said to us by recent clients, during and after their examinations.
Examinations at Paddington Central are conducted by examiners trained to police standards in interviewing before qualifying in polygraph. They have run hundreds of private and corporate examinations and they bring the same unhurried, non-judgemental approach to every client who walks in.
London has more polygraph operators than anywhere in Britain and no regulator watching any of them. Our answer is to hold ourselves to the American Polygraph Association's standards: validated techniques, continuing annual training and quality assured scoring on every examination.
Every examiner holds a current Enhanced DBS check.
Key Credentials
Following APA standards and best practices
Choosing a Legitimate Lie Detector Examiner
Nowhere is the polygraph market busier or less regulated than London. Anyone can buy an instrument, build a website and start charging Mayfair prices. Before booking with anyone, us included, check for these things:
Red Flags to Avoid
- ✕No physical charts or data provided with results
- ✕Home tests with no screening of the room or conditions
- ✕Prices significantly below £350
- ✕Same-day results promised before the test
- ✕Multiple issues tested in one session
- ✕No formal pre-test interview
- ✕Unwillingness to explain the process
- ✕No verifiable training or experience
What We Provide
- Comprehensive report with physiological charts
- Professional testing suite at Paddington Central, London
- Computerised polygraph equipment (£8,000+ value)
- Single-issue testing for maximum accuracy
- APA testing protocols followed
- Full transparency about the process
- Verifiable qualifications and experience
- Professional, unhurried examination
Your charts come to you with your report. Heart rate, blood pressure, breathing and skin response, the raw traces your result was scored from. In a market this crowded, an examiner who will not show you the data is telling you something.
Where our clients travel from
Every examination takes place at our Paddington Central suite. These are the towns our clients most often travel from, and how they get here.
- Lie detector test Croydon
By train: East Croydon to Victoria in around 15 minutes, then the Circle line to Paddington
- Lie detector test Bromley
By train: Bromley South to Victoria in around 20 minutes, then the Circle line to Paddington
- Lie detector test Romford
By train: the Elizabeth line runs direct from Romford to Paddington in around 40 minutes
- Lie detector test Kingston upon Thames
By train: Kingston to Waterloo in around 30 minutes, then the Bakerloo line direct to Paddington
- Lie detector test Ilford
By train: the Elizabeth line runs direct from Ilford to Paddington in around 35 minutes
- Lie detector test Enfield
By train: Enfield Town to Liverpool Street in around 35 minutes
- Lie detector test Harrow
By tube: the Bakerloo line runs direct from Harrow & Wealdstone and Wembley Central to Paddington
- Lie detector test Stratford
By train: the Elizabeth line runs direct from Stratford to Paddington in around 20 minutes
How It Works
Booking
Book online in minutes: choose your service, pick a slot with live availability and pay to confirm, in full or with a deposit. Preparation notes, the full venue address and directions to One Kingdom Street arrive with your confirmation.
Pre-Test Interview
The examination begins with a conversation, not sensors. Your examiner spends the first hour with you agreeing the precise question to be tested, because a well built question is what makes the result unarguable.
The Examination
The recorded test takes around 90 minutes. Sensors track breathing, cardiovascular activity and skin response while you answer a short series of yes or no questions, each one already agreed with you.
Results
Before you step back out into Paddington you know the preliminary result. The full written report, charts included, is with you inside 24 hours.
Booking Policy
Booking
- Pay in full, or secure your date with just a £199 deposit
- Deposit bookings: the balance is collected automatically two days before your test — nothing to remember, nothing to pay on the day
- Instant confirmation and preparation notes by email
- Full venue address, directions and parking details with your confirmation
- Need to change your appointment? Contact us and we will do our best to rearrange
On the Day & Privacy
- Payments appear discreetly as "LPI" on bank statements
- Results are released only to the person named on the consent form
- Appointments are staggered, so you will never meet another client
- Allow around two hours for your visit
- Bring photo ID on the day
Secure payment via Stripe. Your card details are held by Stripe, never by us — whether you pay in full or book with a deposit. All bookings are confirmed immediately.
Not ready to book? Message us on WhatsApp first
Frequently Asked Questions
Get answers to the most common questions about polygraph testing
Book Your Appointment
Secure online booking with instant confirmation. All enquiries are handled with complete discretion.
Relationship Test
from £495Single-issue fidelity testing
Couples Test
from £709Back-to-back tests - Save £281
Pre-Employment
from £599Background verification
Theft Investigation
from £548Missing property investigation
Free Consultation
from Free20-minute phone call — use the enquiry form below
Live availability, secure payment, instant confirmation — all on this site.
Or send us an enquiry
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Office Information
Questions About Booking?
All bookings include instant confirmation, secure online payment, and a pre-test consultation to prepare you for the examination.