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Regional coverage

Lie detector test in Wales

Three controlled examination rooms — Cardiff, Swansea and Wrexham — and the border towns of Chester, Shrewsbury and Hereford within reach of the rest. Welsh prices are English prices; it is Scotland that differs.

Call free — 0800 861 1058

3 controlled examination rooms
4 towns with a room of their own
£495 all-inclusive, one person
No travel charge, anywhere in the region
LieDetectorTest.uk

UK’s #1 Private & Confidential Polygraph Provider

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Book in Wales

Your appointment

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Your examiner will confirm the final appointment after reviewing your case.





The name of the person organising and paying for the test.



Details & payment


Examination1 person - £495
Total fee£495
Deposit today£125
Balance, due 48 hours before£370

The remaining balance of £370 is payable 48 hours before the appointment if neither you nor the examinee cancels.

A few quick steps. The £125 booking fee secures your appointment and comes off the total; the balance is due 48 hours before the test.

What it costs in this region

£495 all-inclusive for one person, £695 for a couple and £295 each for three or more on the same day — the same figure at every room in Wales, with no travel charge.

The south is served from Cardiff and Swansea, the north-east from Wrexham, and mid-Wales is genuinely remote from all of them — Shrewsbury is the room most people from Powys use. Where no room is close the examiner travels, and there is no travel charge for doing so.

Where we test

Four towns in Wales.

Every one has a controlled examination room of its own. Choose a town for its addresses, its prices and what people there come to us about — or put your postcode into the form above and it will rank them by distance.

Every office in the UK

What we test for

Services we provide across Wales.

The same examinations, run to the same standard, at every office in the region — whichever of these brought you here, it works exactly the same way wherever in Wales you book.

From our casebook

What Wales has asked us to test.

The most recent cases published from every town in this region, newest first. Each town's page carries its own in full.

Asked across Wales

The questions this region raises.

Do Welsh tests cost more?

No. Wales is on the same rates as England — £495 for one person, £695 for a couple. Scotland is the only part of the UK with its own price list, because examiners travel to it from England.

What about mid and west Wales?

The examiner travels at no extra cost. For Powys and the borders Shrewsbury is usually the nearest room; for Pembrokeshire and Ceredigion it is Swansea.

Can the examination be in Welsh?

Ask the helpline before booking. Question wording is agreed in advance and has to be unambiguous to the person being examined, so language is a question we would rather settle on the phone than on the day.

Why is the booking fee non-refundable?

Because the work starts before you arrive. An examiner reviews your case, agrees the questions with you in advance and prepares the examination — and the slot is held for you and nobody else. That is also why booking waives the 14-day cooling-off period, which is set out in the terms and conditions. If you are unsure whether a test is the right step, call before you book rather than after.

How many questions can be asked?

Up to 4 specific-issue questions, alongside the profiling questions the format requires. Each is repeated at least three times during the test, because consistency across repetitions is what makes the result readable.

Does it hurt?

No. The blood pressure cuff stays inflated during the test and can feel tight — about like having your blood pressure taken at a surgery. Nothing else is felt at all.

What if someone tries to beat the test?

Countermeasures were a real problem with older equipment. Modern instrumentation records the attempts themselves — deliberate movement, controlled breathing, pressure applied out of sight — and a trained examiner sees them in the data. An attempt to distort the test is itself a finding.

When do I get the results?

A full written report reaches you by email within 24 hours of the examination, or within 48 hours by tracked post if you prefer that. Every report is checked and verified by a second examiner, so what you receive is a qualified opinion rather than one person's reading.

What happens if I don't book an examination date within 30 days?

Your examination date needs to be agreed within 30 days of the original booking date. If it is not, we may close the booking and the £125 booking fee stays non-refundable — clause 3.15 of the terms and conditions has the exact wording. If your circumstances change, call the helpline before the 30 days runs out rather than after.

Can I change my appointment date?

Yes, with at least 48 hours' notice, and the new date has to fall within 30 days of the original booking date — see clause 3.9 of the terms and conditions. Call the helpline to make the change; it is time-sensitive, so a call gets it done faster than email.

What happens if I miss the pre-examination questionnaire deadline?

You have 24 hours from booking to return it, by text or SMS link. Miss that window and we reserve the right to cancel the appointment — clause 3.5 of the terms and conditions sets it out. If you need more time, call the helpline before the 24 hours is up rather than after.

What if the result isn't what I expected?

It stands either way — No Deception Indicated, Deception Indicated or Inconclusive — and no refund is due once the test has been carried out and the report provided, regardless of the outcome. Clause 3.12 of the terms and conditions sets it out. If you are unsure whether a test is the right step, the free consultation before you book is the place to ask.

Client reviews

What people say afterwards.

Independent Trustpilot and Google reviews. A review never records which office the examination was at, so these are clients from across the UK rather than from Wales alone.

Everything from start to finish was perfect. He explained everything so well. He put us as ease. We are so delighted with this service , I cannot thank them enough. Thank you
Nafeesa B · Trustpilot
I had my test yesterday with Mark and he was very kind and professional. He explained everything clearly, which helped me feel more relaxed during the test. He was fair, respectful, and made the whole experience much less stressful. Thank you for being so helpful and professional.
Hadi · Trustpilot
The team at Lie Detector Test is highly professional, helping to turn what could be a stressful experience into something much more manageable. Their communication is excellent, and they provide clear, understandable results.
Emiliano Ramos · Trustpilot
Marc was amazing!!! Very knowledgeable and put all my worries at ease. Thank you! Would definitely recommend.
Ellie Collins · Trustpilot
I went to polygraph results today At lie detector test uk and Met a lovely guy, Marc who explained the process. He put me at ease. Great experience from start to finish. This firm is highly recommended. I was so scared but I absolutely 💯 smashed it 99.9% pass. I was let down by another firm with the eye lie test. I have sever dyslexic so having the questions asked & answering myself rather than the button on an eye detector test was so much better. I highly recommend 👌 the company & Marc for all the help you gave me. Explaining step by step means the world to a person with dyslexicia 5 🌟 thanx Kelly 👍
customer · Trustpilot
I definitely recommend the Lie Detector Test! With a 5 star rating, they really deserve it. The entire process, from booking to receiving the final report, was smooth and efficient.
Jacob · Trustpilot
I felt quite anxious about using a lie detector service, but the team here really put me at ease. They thoroughly explained everything and provided the results quickly and accurately.
Veronica Medina · Trustpilot
I recently took a lie detector test in the UK and the experience was highly professional from start to finish. The examiner clearly explained the whole process, making me feel calm and informed at every step. The environment was private and respectful, which helped a lot with confidence. The results were delivered promptly and with a detailed explanation, showing real expertise and transparency. If you need a reliable and discreet polygraph test in the UK, this is a trustworthy option.
Maria C Fernández Parra · Trustpilot
The examiner was extremely friendly and put us at ease as much as possible. He was very friendly and explained everything in great detail. Extremely professional, very happy with service, thank you m.
amy tinsley · Trustpilot
I had an outstanding experience with lie detector test UK. My examiner was Marc who was so professional at what he does, he guided me to ask the right questions as I was a difficult client who couldn't grasp it but he had so much patience and guidance and I wouldn't have got the answers I was looking for without him. I would also like to mention Jo, the telephone advisor who spoke to me with such care and humanity, I felt like I knew her personally which put me at ease throughout the process. Jo was very down to earth and helped me with every enquiry I asked for. I couldn't thank them both enough and im sure we will be back for another test as there has been a lot of lies, he failed all 4 questions so thank you again for my clarity and helping me move forward to getting the truth.
Mari Ann Cassidy · Trustpilot
Absolutely top drawer couldnt have felt more comfortable if i tried was explained everything clearly and passed with flying colours thanks to the team and marc himself utter gentleman
Jack stroud · Trustpilot
I was very nervous at first but it didn’t take long before I felt totally relaxed, The examiner was very professional ,I would recomend them 100%. Thank you for your kindness & expertise
Mary · Trustpilot

Book in Wales

Talk it through before you decide anything.

The consultation is free and there is no obligation to book. Most people who call have never done this before — that is exactly what the helpline is for.

Call free — 0800 861 1058 Book a test

Monday to Friday, 9am – 6pm · Saturday 10am – 6pm, Sunday 10am – 2pm. Or text 07782 223740.

Not sure whether a test is the right step? The consultation is free, and there’s no obligation to book.
Need to book now? Our online booking system is open 24/7. Speak directly with our team about your test or booking.