Lie Detector Test in {LocalBranch:CityTitle}

Lie Detector Test in North London

If you need peace of mind about a partner or if you need to prove your innocence then taking a lie detector test can help.

How It Works

When a client initially calls and speaks to our case managers they will be asked a number of questions to ensure that they will be suitable to undertake a test, the reason for the test will also be discussed in order to ensure that the test is viable.

A lie detector test will normally take between two to three hours and consists of three stages: The ‘Pre-test’, the ‘in-test’ and the ‘post-test’.

During the Pre-test the examiner will explain the process of the test, how the lie detector instrument works as well as discuss an examinees medical, physiological and psychological background. During the pre-test the reason for the examination will also be discussed in detail.

No Surprise Questions

During the In-test phase the examiner will review with the examinee all the questions that will be asked during the actual testing. An examinee will never ask surprise questions during the test. Next an acquaintance test will be conducted, this is a short test to ensure the instrument is adjusted to the examinees physiology and help the examinee understand the process. Finally the actual testing will be conducted and the reviewed questions will be asked.

During the Post-test the examiner will have reviewed the data collected during the in-test phase, and examiner will discuss the test and give an examinee the opinion of Truthful, Deceptive or Inconclusive.

Lie Detector Test Questions

We will always recommend that an examinee is only tested on a single issue as this provides the most accurate form of testing. While it is possible to test an individual on multiple issues, a client should consider the most important aspect of the investigation in order to establish that an examinee is subjected to the best possible testing methods.

How Much?

See our Lie Detector Test Packages page for information on pricing.

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Hemel Detectives Services

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Why Choose Hemel Detectives?

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

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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

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.

Hemel Detectives

Professional, efficient and discreet private investigator services in 158 UK cities, backed by an extensive UK network. Hemel Detectives serve North London and localities throughout Greater London / Home Counties.

With the skills, knowledge and leading technology, Hemel Detectives supply a comprehensive private investigations service for private and commercial clients.




Hemel Detectives - 95% Success Rate, 100% Legal

If you have any questions about our private investigations services in North London, or private detective packages, then don't hesitate to call our friendly team on 01923 428 848 or contact us via the website.

Hemel Detectives - The No1 Detective Agency in North London

Serving North London, Leighton Buzzard, Berkhamsted, Chesham, Harpenden, St Albans and Radlett and all areas in and around Greater London / Home Counties