Lie Detector Tests

Male and female examiners / APA accredited

Established in 1999, Hemel Detectives are the UK's leading polygraph provider. Tests to US standards. APA & AAPP accredited.

The UK's Largest Test Provider

Hemel Detectives provide more lie detector tests than any other company in the UK. All Hemel Detectives examiners are trained to the highest standard at the New England Polygraph Institute in the United States.

About Your Test

The test covers 3 questions which is the industry standard
Each test takes on average 2 hours
The examinee will be on their own for the entire examination
The examinee can be escorted to the examination
The result is available immediately after the test
Your report will be posted or emailed within 48 hours

Complete Our Questionnaire

All examinees are required to take a short safe guarding questionnaire, either online or over the phone on 01442 359 936 with one of our Case Managers, to ensure they are able to proceed with the test. Please be aware that during busy periods test slots are filled very quickly

Complete safe guarding questionnaire online.

Contact Us

Still not sure? Then contact one of our Case Managers today with any questions you might have.

For Free Advice Phone:
01442 359 936

To complete your safe guarding questionnaire over the phone with a Case Manager or to find out more information on taking a lie detector test, call today on 01442 359 936.

Buy Your Test Online

Hemel Detectives Case Manager waiting to take your call

Live Chat
Now Online

Service and Support: 01442 359 936

Get Hemel Detectives customer service and support on on Twitter

Get service and support

Get Hemel Detectives customer service and support on Facebook

Get service and support

Email Us mail@hemelhempsteaddetectives.co.uk

We're Open: Monday - Saturday: 9am - 8pm

View images from Hemel Detectives on Instagram

Message Us

Thank you. Message sent.

Case Management Team

North London Detectives experienced management team and highly skilled private investigators ensure that your case is carried out professionally and efficiently.

More About Hemel Detectives

Try Our Cheat Detector Test

Hemel Detectives FAQ

To hire your company is more expensive than some others that I have seen. Why is that?
How Much is it to Hire a PI?
Why are you more expensive than some private investigation companies?
I can get private investigators cheaper somewhere else, so why should I pick you?
You seem a little more expensive than some of the other companies. Why is this?

View Hemel Detectives FAQs

Nationwide Client Comments

Durham Detectives did a really thorough job, providing me with high quality photographic evidence and even DVD footage. They left no stone unturned, to get the...

Bob, Co. Durham
I was pleasantly surprised to find Newcastle Detectives not only the most competitive in price, but second to none when it came to customer service. Top marks...

Geoff, Newcastle
My daughter moved out after an argument with myself and my new partner. I didn’t hear from her for months. I thought, given time, she would get in touch again...

Val, Whitley Bay
I just wanted to know what my partner was doing online every night. He said it was work, but he was staying up into the early hours of the morning, even at...

Lynsey, South Shields
I really wanted a female private investigator to carry out the surveillance I needed doing. Durham Detectives provided one without hesitation. Their case...

Pat, Durham

More Client Comments

About North London

Hemel Detectives have been operating in North London and Greater London / Home Counties for almost 20 years.

In 1965 Camden, Hackney, Hammersmith and Fulham, Islington, Kensington and Chelsea, Tower Hamlets and Westminster were designated Inner London boroughs.
For the purposes of the London Plan, there has been a North London sub-region in operation since 2004.
The boundary commission class the entire district as part of South London.
The London Borough of Richmond upon Thames includes sections on both sides of the River Thames.
The northern part includes most of the historic central areas including the City.
The River Thames divides Greater London into two parts.
North and South London as defined by the Boundary Commission.
The area it covers is defined differently for a range of purposes.
North London is the northern part of London, England.
In 2008 it was amended and it now consists of Barnet, Camden, Enfield, Hackney, Haringey, Islington and Westminster.
In 2001 this area had a population of 1,042,000.
It originally consisting of Barnet, Enfield, Haringey and Waltham Forest.

View All LocalPI Branches in the UK