Professional lie detector testing serving Liverpool and surrounding Merseyside. One clearly defined question, one structured examination, one written answer you can rely on - from £499 with no hidden extras on the day.
From Liverpool city centre to every surrounding town in Merseyside, our examiners are on the road every week. Lie detector testing where you choose, when you choose, documented properly every time.
Home visits across Liverpool are part of the service, not an extra. If you would rather not test at home, tell us your postcode and how far you can travel, and we arrange a private local venue for you.
If you are researching a polygraph lie detector test in Liverpool, it helps to know exactly what the appointment involves. A professional examination follows the same broad structure wherever you go, and ours is built around three clear stages.
The examiner discusses the issue under investigation and agrees every question with you in advance. There are no surprise questions in a professional test. This stage matters more than any other, because a well-defined single issue with precisely worded questions is what separates a reliable examination from a vague one.
The subject is fitted with sensors and the agreed questions are presented in a controlled sequence while their responses are recorded. The session is calm and structured - no interrogation tactics, no pressure. Most appointments take between one and three hours from arrival to debrief depending on the complexity of the case.
After the session the recorded data is analysed and the result is reported, followed by a written results certificate setting out the method, the questions examined and the conclusion in plain English. You are not left interpreting jargon: the report tells you what was asked and what the data showed.
Private polygraph tests in the UK typically cost between £400 and £700 for a single-issue examination, and because the industry is unregulated there is no standard pricing. Some providers add substantial extras for home visits, evening appointments or urgent bookings, so the advertised price is not always the price you pay.
Tests for Liverpool clients start at £499 and the quote is complete: travel across Merseyside, the full examination and the written report are all included. Same-day and next-day slots are usually available.
Private polygraph testing in the UK is unregulated, so anyone in Liverpool can call themselves an examiner. These six questions separate a disciplined provider from an expensive guess - ask them of anyone you are considering, including us.
Choose a date and time, and tell us whether you want the test at home in Liverpool or at a private venue nearby.
Before any testing starts, the examiner talks the matter through with you and every question is agreed. Nothing is asked that you have not seen.
A calm, structured session at your home or a discreet venue in Merseyside. The examiner arrives unmarked and nothing about the visit draws attention.
A results certificate setting out the method, the questions examined and the conclusion, in plain English.
Lie detector testing is used every day across Liverpool and the rest of the UK to settle questions that conversation alone cannot. These are the situations we are asked about most:
Our lie detector test is EEG-based rather than a traditional polygraph. Both set out to answer the same question, but they measure different things. The table sets out the differences plainly.
| Traditional polygraph | EEG-based test (ours) | |
|---|---|---|
| What it measures | Breathing, heart rate, blood pressure and sweat response | The brain's recognition response (the P300 signal) to specific details |
| Equipment | Chest straps, a blood pressure cuff and finger sensors | A lightweight EEG headset |
| Effect of nerves | Anxiety raises the same signals the test reads | Measures recognition, not general stress |
| Typical session | Often two to three hours | Typically 60 to 90 minutes |
| Questions agreed in advance | Depends on the provider | Always |
| Written result | Depends on the provider | Always, with every test |
The full side-by-side explanation is on our Polygraph vs P300 page.
How you raise a test shapes how it goes. Name the one issue, explain that every question is agreed in advance, and agree up front who sees the written result and when.
For employers in Liverpool: make the invitation in writing, make clear the test is voluntary, and take HR or legal advice before treating a refusal as relevant to any decision.
The next step takes five minutes online. Choose your test and time, and an examiner will be with you in Liverpool - often within a day or two.
Book Your Polygraph NowOr call us on +44 161 524 5513 to talk it through in confidence first.
Two questions come up before almost every Liverpool booking: how accurate is the test, and can the result be used in court? Both deserve straight answers.
Ask any provider two questions before you book in Liverpool: is the test limited to a single issue, and are the questions agreed in advance in writing? Those two disciplines are what separate a defensible examination from an expensive guess. Both are standard in every test we run.
In England, private polygraph results are not admissible as evidence in criminal trials. The state does use polygraph testing in one narrow area: as a licence condition for certain offenders released from prison, run by the probation service under the Offender Management Act 2007 and later extended to some domestic abuse and terrorism offenders. That statutory testing is entirely separate from private testing, which remains unregulated. Civil and family courts decide case by case what weight, if any, to give a private report.
What private test reports are used for, every day, is informing personal decisions, resolving family and relationship disputes, and supporting internal workplace and business investigations - situations where a documented professional finding carries real practical weight even though it is not a court exhibit.
The nearest areas to Liverpool with their own polygraph test guide:
Chester · Warrington · Wigan · Wrexham · Bolton · Preston
Somewhere else? We still cover you. See every area we serve.
Rated 4.9 out of 5 from 199 reviews across the UK
Booked a lie detector test after weeks of worry. The examiner came to us, explained every step, and the written report arrived quickly. Calm, professional and completely discreet.
We needed answers as a family and the test settled the matter for good. The process was explained step by step and the results certificate gave us something concrete to move forward with.
Booking online was simple, the examiner was patient, and everything was explained in plain English. Far less intimidating than I expected a lie detector test to be.
I compared every lie detector service I could find. These were the fastest to respond, the clearest about the process, and the appointment happened within days.
I was anxious about being tested at all. The examiner took time to put me at ease and the whole session was respectful from start to finish.
Used for a workplace accusation. The process was documented thoroughly and both sides accepted the outcome. Would have liked a slightly faster report turnaround.
Being tested at home rather than travelling somewhere unfamiliar took most of the stress out of it. Everything was set up quickly and packed away discreetly.
The admissibility rules on this page, applied: voluntary written invitations, HR advice first, and a test used as one strand of a documented investigation - never the verdict. How one employer cleared three staff and found the answer lawfully.
Read the case study
Most private tests are never meant for a courtroom - they are meant to settle a question between two people. How an accused partner volunteered, agreed the questions in advance, and ended a two-month argument in ninety minutes.
Read the case study
When the police cannot attribute shared access and solicitors only harden positions, a symmetrical pair of tests - identical scope, results shared simultaneously - resolved what two years of letters could not.
Read the case studyAll three, with full detail on how each test was structured: browse the polygraph case studies.
Straight answers to the questions Liverpool clients ask before booking a lie detector test.
The next step takes five minutes online. Choose your test and time, and an examiner will be with you in Liverpool - often within a day or two.
Book Your Polygraph Now