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Frequently Asked Questions

All Answers and professional opinions are provided by Our Client Support Team and Our Associated Accredited Examiners. Please feel free to contact us if you would like further information.

Q. What is a Lie Detector Test?

A: “Also known as a polygraph examination. It is an intricate procedure involving state of the art equipment, experienced and trained examiners and a number of conditions to measure variables in a person to determine whether they are lying or telling the truth about a specific issue, incident or event.”

Q. How does it work?

A: “The examiner measures countless variables including heart rate, perspiration, eye movement and more this is combined with the metrics and analysis provided by our state-of-the-art equipment and further techniques involved in high level intelligence”

Q. How Accurate is a test?

A: “We can provide an achievable 98% accuracy for our polygraph examination as we have a strict operating framework which relies on 4 main factors where conditions all need to be satisfied to the gold standard. An experienced and accredited examiner, up-to-date and highly effective modern polygraph testing equipment and interface, correct environment which is to be void of distraction or disturbance, pre-examination screening of the subject to make sure they abide to our conditions”

Q. How much does it cost?

A: “Polygraph testing prices across the UK range from £595-£895 per specific issue exam, and the average fee is about £600. (for real polygraph, not voice stress toys used over a phone or other sub-standard tests). When you are looking to commit to a polygraph examination please make sure you verify the credentials of the examiner and be mindful of imitation products and examiners who offer reduced prices but are not be able to provide anything substantial in terms of a report which can be used in confidence. ”

Is it cheaper if I just have 1 question?

This is one of the most frequently asked questions we get. The price of a polygraph test is not dependent on the amount of questions you want the subject to be asked, and here’s why.

A lie detector test will become ineffective if too many questions, or too many different questions, are asked. When you see a tv show in which the examiner asks question after question after question, you should know that the show is for entertainment purposes – the results will not be accurate. Equally in asking one question, the same process, focus and procedure must be taken. If a company offers you a cheaper price for 1 question then please verify their credentials.

Let me explain this further; a polygraph test should only ever be used to gain the truth about one issue. Only one. Each question should be regarding the specific issue. This way, if the subject answers dishonestly on any of the questions he will fail the entire test because all the questions are related to that one, single issue.

Our professional polygraph examiners will only conduct examinations in accordance with testing procedures and protocols recognised by the American Polygraph Association. We will not conduct substandard examinations. A properly conducted polygraph examination will result in accuracy rates of 95 to 98 percent whereas an improperly conducted examination will result in accuracy rates that are no better than the flip of a coin. If you are told it is 100% accurate then there is something not quite right as any scientific test must consider variance.

Each session can take anywhere from 90 minutes to three hours to complete, but to answer the initial question ‘No, the price does not vary according to the number of questions asked’, because we will only ask the amount of questions needed to ensure an accurate result.

Why is a not refundable booking fee required?

The non-refundable booking fee confirms the customer’s intention to proceed with the booking and is used to cover costs we will have incurred, such as travel and venue expenses. The booking fee is paid at the moment of booking and then subtracted from the total to be paid on the day of the test.

The nature of our work requires our examiners to be flexible and involves travel time and costs. Therefore we require a £300 non-refundable booking fee payment when you book your appointment. The payment is non-refundable to ensure that the subject does in fact intend to take the test.

Without these measures in place, there is a temptation for a guilty party to book a test as proof that they have nothing to hide, and subsequently cancel the booking. Please be sure you or the test taker can, and intend to make the appointment when you book with us

We are a highly mobile polygraph service for client convenience, making ourselves available days, nights and weekends. This mobility requires us to be efficient in fee collection and scheduling. We would not be able to keep our fees so reasonable if after driving several hours, an examinee decided not to show up, leaving us with no work, no income and a long drive home. For these reasons, we do require £150 non-refundable booking fee WHEN you make your appointment.

Once an appointment is made, fees are non-refundable. You may certainly call for a free consultation at any time, we simply ask that you not schedule an appointment until you are certain you can make that appointment.

Is there a minimum age limit for someone taking a polygraph test?

The short answer would be no. However, in order for the test to be accurate, the subject does need to possess a good level of language and to understand the concept of truthfulness. Some children under the age of 16 may not possess that comprehension, so this limit is set on that basis.

Why does it take so long?

Every single case we have is as important as the last, so the time spent on putting you at ease, making sure you know the process and explaining the importance of honesty is time well spent because it ensures that we get the most accurate results possible.

On the surface that does seem like a long time, but the actual polygraph test will usually take the least amount of time. The majority of the time will be taken up by us talking. We will discuss the issue at length, which means we can ask the most pertinent questions possible, which in turn gives the most accurate results. We need to make sure you are physically well enough for the test, and that you understand the difference between lying and telling the truth.

You will have the opportunity to tell your side of the story in full, and, once we have compiled a list of the questions to be asked you will be told what those questions are before the actual test begins. Once the polygraph examination is completed, we will then give you the results and discuss them before you leave. It is quite a lengthy procedure but it does go by quickly!

How to schedule a polygraph test in the UK?

To make a booking you can either book through our website or call our client support team on 0800 368 8277. Our private lie detector testing services are available all over the UK through our network of controlled offices and residential outreach. In order to confirm your order, it is required to pay a deposit of £150. Once you have provided the details and paid the deposit, we can commence with the case work and preparation.

In a vast majority of cases we are able to arrange a test within a 1 – 3 days of the order being placed. For same or next day appointments we normally require a minimum of 4 hours to arrange the examination and payment in full is required when booking.

How long will I have to wait for the results?

The subject will be given the results verbally immediately after the test, once they have been scored. If required, a written copy of the results can be posted. We are also happy to call and discuss the results with an interested third party to whom the subject wants the results to be known.

Do I need to come to a central office for a polygraph test?

We realise that one location will not be convenient for many people, so to that end we do travel to various locations across the country, as long as a suitable venue is available or your residential address satisfies the test criteria.

Why would anyone who is guilty agree to take a lie detector test?

If a person refuses the chance to clear their name using a polygraph, that alone does not suggest guilt. We have experienced many cases where the subject was just nervous about the experience and this is justifiable as it is not an experience which anyone is accustomed to on a regular basis. Our examiners provision for nervousness and are trained to counter defensive behaviour which can be often perceived as guilt for one matter but relate to another matter entirely.

What about Voice Stress Tests?

Voice stress testing is not as accurate or reliable as polygraph testing, so we do not use it in our examinations.

Answers to questions about the actual polygraph examination provided by our highly experienced and accredited examiners

How can you justify 98% accuracy?

We can provide an achievable 98% accuracy for our polygraph examination as we have a strict operating framework which relies on 4 main factors where conditions all need to be satisfied to the gold standard.

  1. An experienced and accredited examiner from the top echelon of the industry
  2. Up-to-date and highly effective modern polygraph testing equipment and interface
  3. The correct environment which is to be void of distraction or disturbance
  4. Pre-examination screening of examinee to make sure they abide to our conditions

The American Polygraph Association (APA) will tell you that a properly conducted session, with specific questions will give a result of between 95% to 98% accuracy. As with any scientific experiment there is no guarantee of 100% as there are natural variances which need to be provisioned for and taken into consideration.


What happens if someone tries to beat the test?

Many people think they can beat the polygraph test, and in older versions of the test it was possible. However, with today’s technology, there are measures in place to detect any attempt to tamper with the test. Moreover, you would not only be up against the equipment, but you would also be trying to fool highly experienced and trained examiners, people who are well aware that some will try to beat the test.

I’m on prescription medication from my Doctor. Do I need to stop taking them?

Definitely not! Not taking your prescription drugs could be dangerous, and in fact, could interfere with the test. The vast majority of prescription drugs will not interfere with the accuracy of the test as we need you to be as ‘normal’ as you would be on any other day. In our pre-examination assessment we check for any medical conditions and advise accordingly.

Can nerves make me look guilty when I’m not?

This is a situation which has been exploited (unsuccessfully) by many people who think they can beat the polygraph. Nerves will NOT affect the outcome of the examination, and for good reason. If you are nervous at the beginning of the test, as most people are, you will remain nervous throughout the test. Your reactions to answering truthfully and deceitfully will still differ and will still look very different to each other, thus giving us a clear indicator of guilt or otherwise.

Does it hurt?

No. You may feel a slight discomfort or pressure from the blood pressure cuff on your arm, which is inflated for the duration of the test, but it is no more uncomfortable than if a nurse or Dr was taking your blood pressure. In fact, the cuff will be slightly less inflated than in a medical situation, so discomfort should be minimal, if at all.

I’d like to sit in on the test. Can I do that?

if you have brought someone to us for a lie detector, you being in the room, watching and listening, is almost guaranteed to distort the truth. Let’s face it, not many people will want to admit their guilt with their accuser sitting next to them, or even listening in! Most people find it easier to admit guilt to a stranger – that’s why counselling is so effective! So no, as much as we understand that you would want to sit in and hear what is being said, your presence would undermine the effectiveness of the test.

For more information or for a quotation, please feel free to call us on +44 20 3129 6800 or e-mail:

Easy Online ordering for discreet, prompt and professional lie detector services

Through our secure online booking system, you can request your preferred date, time and location for the lie detector test. To proceed and confirm your booking we will require upfront payment of £150 (not refundable booking fee). Once the payment is received you will receive a sms (text message) confirmation of your booking and pre-examination assessment to complete online,

The remaining balance of your chosen test will be required before the examination day. There are no hidden costs - all prices include vat, initial upfront payment, full written report and controlled office.

Please select your chosen test type on drop down list below to see full price:



Nationwide controlled offices, residential tests and discreet locations available

Our lie detection service is flexible with wide coverage and prompt service. We can schedule your lie detector test with relatively short notice. Our secure and discreet locations in all major towns and cities in the England, Scotland, Wales and Northern Ireland are available if required and if conditions requested by the examiner are met then we can conduct the polygraph examinations at residential addresses. We are well positioned to serve our clients with Lie Detector Tests when they need them.

If you require any assistance with your online booking or have any further questions, please contact our support team on 0800 368 8277