Hertfordshire Police: First UK Force to Use Polygraph in 2011

Professor Don Grubin's 20-Year Campaign

The introduction of polygraph testing into UK policing was the result of two decades of determined research by Professor Don Grubin, Professor of Forensic Psychiatry at Newcastle University [1]Verified UK Police Lie Detector Tests
Confirms Hertfordshire Police pilot details, Professor Grubin's role, American APA examiner use, and growth to 47 examiners conducting 10,000+ tests. Professor Grubin's focus throughout this period was to establish whether polygraph tests could be used by the Probation Service and the police to support the management of sex offenders living in the community [1]Verified UK Police Lie Detector Tests
Confirms Hertfordshire Police pilot details, Professor Grubin's role, American APA examiner use, and growth to 47 examiners conducting 10,000+ tests. He is also the Project Director of the Sexual Behaviour Unit in Newcastle and psychiatric advisor to the National Offender Management Service sex offender programmes [2]Verified Don Grubin - IATSO Profile
Confirms Grubin's role as Professor of Forensic Psychiatry at Newcastle University and Project Director of Sexual Behaviour Unit.

Professor Grubin's early work laid crucial groundwork. His 2004 study examined whether periodic polygraph testing acted as a deterrent for engaging in risk behaviour among 50 community-based male sex offenders [3]Verified A Preliminary Study of the Contribution of Periodic Polygraph Testing to the Treatment and Supervision of Sex Offenders
Confirms 97% disclosure rate at first polygraph examination in Grubin's 2004 study of 50 community-based sex offenders. The findings showed that 97% of subjects disclosed relevant behaviours at their first polygraph examination, demonstrating the test's powerful disclosure effect [3]Verified A Preliminary Study of the Contribution of Periodic Polygraph Testing to the Treatment and Supervision of Sex Offenders
Confirms 97% disclosure rate at first polygraph examination in Grubin's 2004 study of 50 community-based sex offenders. A subsequent trial involving 347 offenders across ten English probation areas found that case managers reported new disclosures relevant to supervision in approximately 70% of first tests — compared with just 14% in the non-polygraphed control group [4]Verified Large Scale Trial Implementation of Mandatory Polygraph Testing - REF Case Study
Confirms 70% disclosure rate in polygraphed group vs 14% in non-polygraphed control group across 10 English probation areas.

In 2008, building on these results, a three-year mandatory study commenced with UK Probation to evaluate polygraph testing on high-risk sex offenders following their release from custody [1]Verified UK Police Lie Detector Tests
Confirms Hertfordshire Police pilot details, Professor Grubin's role, American APA examiner use, and growth to 47 examiners conducting 10,000+ tests. The study demonstrated conclusively that polygraph testing helped managers evaluate the risk posed by offenders, thus protecting the public from harm [1]Verified UK Police Lie Detector Tests
Confirms Hertfordshire Police pilot details, Professor Grubin's role, American APA examiner use, and growth to 47 examiners conducting 10,000+ tests. This critical research informed the Offender Management Act 2007, which made provision for mandatory polygraph testing of sex offenders released on licence [5]Verified Offender Management Act 2007 - Explanatory Notes
Confirms Sections 28-30 enabling polygraph licence conditions for sex offenders and prohibition on use in criminal proceedings.

The 2011 Hertfordshire Small-Scale Trial

In 2011, Behavioural Measures UK (BMUK), the company established by Professor Grubin and US polygraph expert Eric Holden in 2009, commenced work with the police to evaluate and implement polygraph testing [6]Verified About Behavioural Measures UK (BMUK)
Confirms BMUK established in 2009 by Grubin and Holden, commenced police work in 2011, 14 police forces now using polygraph. At the time, there were no trained polygraph examiners in either the police or probation service to carry out these tests [1]Verified UK Police Lie Detector Tests
Confirms Hertfordshire Police pilot details, Professor Grubin's role, American APA examiner use, and growth to 47 examiners conducting 10,000+ tests.

In a small-scale trial, Hertfordshire Police, with the oversight of Professor Grubin, used an American examiner trained to APA standards to test men arrested for downloading indecent images of children from the internet [1]Verified UK Police Lie Detector Tests
Confirms Hertfordshire Police pilot details, Professor Grubin's role, American APA examiner use, and growth to 47 examiners conducting 10,000+ tests. The study, co-authored by Grubin, Andrew Joyce of Hertfordshire Constabulary, and Eric Jay Holden, was published in Sexual Offender Treatment in 2014 and involved polygraph tests on 31 men considered 'low risk' by police [7]Verified Polygraph Testing of 'Low Risk' Offenders Arrested for Downloading Indecent Images of Children
Confirms Hertfordshire pilot details: 31 men tested, only 26% confirmed low risk, co-authored by Grubin, Joyce (Hertfordshire Constabulary) and Holden. For more information on polygraph admissibility in UK courts, see our dedicated guide.

The results were striking: low risk was confirmed in only 8 individuals (26%) [7]Verified Polygraph Testing of 'Low Risk' Offenders Arrested for Downloading Indecent Images of Children
Confirms Hertfordshire pilot details: 31 men tested, only 26% confirmed low risk, co-authored by Grubin, Joyce (Hertfordshire Constabulary) and Holden. Risk level was raised for 11 men based on their disclosures, for another 11 (35%) after they were found 'deceptive' on the polygraph, and in one case where countermeasures were used [7]Verified Polygraph Testing of 'Low Risk' Offenders Arrested for Downloading Indecent Images of Children
Confirms Hertfordshire pilot details: 31 men tested, only 26% confirmed low risk, co-authored by Grubin, Joyce (Hertfordshire Constabulary) and Holden. The trial was successful, leading to new disclosures and better risk management decisions [1]Verified UK Police Lie Detector Tests
Confirms Hertfordshire Police pilot details, Professor Grubin's role, American APA examiner use, and growth to 47 examiners conducting 10,000+ tests. This finding demonstrated that polygraph testing could help police identify genuinely low-risk offenders while flagging those who posed a far greater threat than initially believed.

Training the UK's First Police Polygraph Examiners

Following the success of the Hertfordshire pilot, Hertfordshire Police along with South Yorkshire Police put funding in place to train two polygraph examiners each — a landmark first for UK policing [8]Verified UK Police Polygraph - Blog from a UK Police Officer
Confirms Hertfordshire and South Yorkshire each funded training of two examiners, first APA-accredited school at Bramshill. The first APA-accredited polygraph school in the UK was run by Behavioural Measures UK (BMUK) at Bramshill, the Senior Leaders Police Training College in Hampshire [1]Verified UK Police Lie Detector Tests
Confirms Hertfordshire Police pilot details, Professor Grubin's role, American APA examiner use, and growth to 47 examiners conducting 10,000+ tests. The rigorous 10-week programme was taught by some of the most experienced polygraph examiners in the world, including Donnie Dutton, who ran the course and stayed in the UK for eight weeks [1]Verified UK Police Lie Detector Tests
Confirms Hertfordshire Police pilot details, Professor Grubin's role, American APA examiner use, and growth to 47 examiners conducting 10,000+ tests.

Probation polygraph testing would be mandatory, but police testing was established on a voluntary basis [1]Verified UK Police Lie Detector Tests
Confirms Hertfordshire Police pilot details, Professor Grubin's role, American APA examiner use, and growth to 47 examiners conducting 10,000+ tests. This distinction was crucial: while the Domestic Abuse Act 2021 later expanded mandatory testing to new categories of offenders, the police programme relied on consent — and it worked remarkably well. If you're interested in a career in this growing field, learn more about how to become a polygraph examiner.

From Two Forces to Fourteen and Beyond

What started with Hertfordshire and South Yorkshire has grown into a nationwide programme. At least 14 police forces in England and Wales now use polygraph tests, with the most tests carried out in Essex and South Yorkshire [9]Verified Lie Detector Tests: How Are Polygraphs Being Used by UK Police?
Confirms at least 14 police forces using polygraphs, process details, and domestic abuse pilot since 2021. Around 60 officers now work with polygraph technology in the UK [1]Verified UK Police Lie Detector Tests
Confirms Hertfordshire Police pilot details, Professor Grubin's role, American APA examiner use, and growth to 47 examiners conducting 10,000+ tests. The UK PCSOT programme has grown to 47 examiners in police and probation who have conducted over ten thousand examinations [1]Verified UK Police Lie Detector Tests
Confirms Hertfordshire Police pilot details, Professor Grubin's role, American APA examiner use, and growth to 47 examiners conducting 10,000+ tests.

The programme has been enhanced by the development of the BOST technique, a single-issue screening examination created with the expertise of Don Krapohl, an established figure in the field of polygraph research [1]Verified UK Police Lie Detector Tests
Confirms Hertfordshire Police pilot details, Professor Grubin's role, American APA examiner use, and growth to 47 examiners conducting 10,000+ tests. This UK-specific technique is used by both Police and Probation Service as a tool for managing high-risk sex offenders in the community [1]Verified UK Police Lie Detector Tests
Confirms Hertfordshire Police pilot details, Professor Grubin's role, American APA examiner use, and growth to 47 examiners conducting 10,000+ tests. For those seeking testing in the area where it all began, you can arrange a lie detector test in Hertfordshire today.

South Yorkshire Police has been particularly active, carrying out 92 tests in its first year of usage. Of those, 18 delivered responses indicating offenders were lying, and two tests were halted after offenders made admissions prompting immediate arrests [10]Verified One in Five Sex Offenders Fail Yorkshire Police Force's Lie Detector Tests
Confirms South Yorkshire Police conducted 92 tests in first year, 18 indicated deception, 45 of 60 passed tests revealed new information. Even among the 60 tests classed as passed, 45 cases saw offenders reveal previously unknown information simply by telling the truth during the polygraph process [10]Verified One in Five Sex Offenders Fail Yorkshire Police Force's Lie Detector Tests
Confirms South Yorkshire Police conducted 92 tests in first year, 18 indicated deception, 45 of 60 passed tests revealed new information. Discover how South Yorkshire Police polygraph testing continues to reveal deception in 1 in 5 sex offenders.

Key Legislation Supporting Police Polygraph Use

The legal framework for UK polygraph testing rests on several important pieces of legislation. The Offender Management Act 2007 (Sections 28-30) enabled polygraph testing to be included as an additional licence condition for adult sexual offenders [5]Verified Offender Management Act 2007 - Explanatory Notes
Confirms Sections 28-30 enabling polygraph licence conditions for sex offenders and prohibition on use in criminal proceedings. Mandatory polygraph testing for sex offenders was piloted between April 2009 and October 2011 in the East and West Midlands probation regions [11]Verified Compulsory Lie Detector Tests for Serious Sex Offenders
Confirms mandatory testing piloted between April 2009 and October 2011 in East and West Midlands, offenders made twice as many disclosures. The pilot found that offenders who took the tests made twice as many disclosures to probation staff [11]Verified Compulsory Lie Detector Tests for Serious Sex Offenders
Confirms mandatory testing piloted between April 2009 and October 2011 in East and West Midlands, offenders made twice as many disclosures.

In 2013, legislation was introduced to implement polygraph testing for sexual offenders assessed as being at high risk of reoffending and causing serious harm [11]Verified Compulsory Lie Detector Tests for Serious Sex Offenders
Confirms mandatory testing piloted between April 2009 and October 2011 in East and West Midlands, offenders made twice as many disclosures. Since January 2014, mandatory polygraph testing has been rolled out nationally, and over 7,000 tests have taken place with individuals convicted of sexual offences, with two-thirds resulting in significant disclosures [12]Verified Mandatory Polygraph Tests Factsheet - GOV.UK
Confirms over 7,000 tests since January 2014, two-thirds resulting in significant disclosures, domestic abuse pilot commencing July 2021. Section 30 of the Act makes clear that information obtained during any part of the polygraph examination cannot be used in criminal proceedings against the examined person — but disclosures can be shared with police for further investigation [5]Verified Offender Management Act 2007 - Explanatory Notes
Confirms Sections 28-30 enabling polygraph licence conditions for sex offenders and prohibition on use in criminal proceedings.

The programme has since been expanded. The Counter-Terrorism and Sentencing Act 2021 introduced polygraph testing for terrorist offenders [13]Verified Counter-Terrorism and Sentencing Act 2021 - Polygraph Extension
Confirms extension of polygraph testing to terrorist offenders under the Counter-Terrorism and Sentencing Act 2021. The Domestic Abuse Act 2021 enabled testing for domestic abuse perpetrators, with a three-year pilot commencing on 4 July 2021 in four probation regions [14]Verified Domestic Abuse Act 2021 - Polygraph Provisions
Confirms three-year pilot of mandatory polygraph examinations for domestic abuse perpetrators commencing 4 July 2021. Learn more about the Domestic Abuse Act 2021 polygraph pilot programme and its implications.

Hertfordshire's Unique C2 Programme

Hertfordshire Constabulary has also pioneered the use of polygraph testing beyond sex offender management through its innovative Choices and Consequences (C2) Programme. Academic research uncovered the use of the polygraph as a bail condition connected to this community sentence programme [15]Verified Not 'Very English' – on the Use of the Polygraph by the Penal System in England and Wales
Confirms Hertfordshire's C2 programme used polygraph as bail condition for prolific offenders beyond sex offender management. The C2 programme is aimed at 'prolific offenders' and is not limited to sex offenders [15]Verified Not 'Very English' – on the Use of the Polygraph by the Penal System in England and Wales
Confirms Hertfordshire's C2 programme used polygraph as bail condition for prolific offenders beyond sex offender management.

The programme works by identifying suitable candidates who demonstrate a desire to rehabilitate by admitting all past offences [16]Verified Choices and Consequences (C2) Programme
Confirms C2 programme details including rehabilitation regime, GPS trackers introduced in 2011, and partnership structure. Offenders' sentences are deferred for up to six months while they undertake an extensive rehabilitation regime including drug treatment, life skills training, education, and employment support [16]Verified Choices and Consequences (C2) Programme
Confirms C2 programme details including rehabilitation regime, GPS trackers introduced in 2011, and partnership structure. GPS-enabled trackers were introduced to the C2 programme in 2011, allowing 24/7 offender monitoring [16]Verified Choices and Consequences (C2) Programme
Confirms C2 programme details including rehabilitation regime, GPS trackers introduced in 2011, and partnership structure. This innovative approach demonstrates how polygraph testing can complement broader community safety strategies.

The University of Kent Landmark Study (2020)

The most comprehensive evaluation of police polygraph testing in the UK was conducted by Professor Jane Wood and colleagues at the University of Kent's Centre of Research and Education in Forensic Psychology [17]Verified An Evaluation of Polygraph Testing by Police to Manage Individuals Convicted or Suspected of Sexual Offending
Confirms two-year evaluation across nine UK police areas, 800+ individuals, polygraph-tested supervisees nearly 6 times more likely to disclose. Commissioned by the National Police Chiefs' Council, this two-year study across nine police areas involved more than 800 individuals convicted or suspected of sexual offences [17]Verified An Evaluation of Polygraph Testing by Police to Manage Individuals Convicted or Suspected of Sexual Offending
Confirms two-year evaluation across nine UK police areas, 800+ individuals, polygraph-tested supervisees nearly 6 times more likely to disclose.

The findings were powerful: polygraph-tested supervisees were nearly 6 times more likely to make at least one risk-relevant disclosure compared to those not tested [17]Verified An Evaluation of Polygraph Testing by Police to Manage Individuals Convicted or Suspected of Sexual Offending
Confirms two-year evaluation across nine UK police areas, 800+ individuals, polygraph-tested supervisees nearly 6 times more likely to disclose. Suspects undergoing polygraph testing were over 7 times more likely to make at least one risk-relevant disclosure [18]Verified University of Kent - Sex Offenders Reveal More Through Polygraph Testing
Confirms polygraph suspects over 7 times more likely to make risk-relevant disclosures and offender manager satisfaction ratings. Professor Wood stated that the findings "support the police use of polygraph testing, particularly mandatory polygraph testing, as a supportive tool for managing individuals convicted of sexual offences" [19]Verified New Research Finds Polygraphs Effective for Sex Offenders
Confirms Professor Wood's findings, offender managers rated helpfulness over 5 on 7-point scale, suspects 7x more likely to disclose. The report recommended the introduction of mandatory polygraph tests for convicted sex offenders as the most effective method of police monitoring [17]Verified An Evaluation of Polygraph Testing by Police to Manage Individuals Convicted or Suspected of Sexual Offending
Confirms two-year evaluation across nine UK police areas, 800+ individuals, polygraph-tested supervisees nearly 6 times more likely to disclose. Read how other forces like West Midlands Police and GMP are managing thousands of sex offenders using similar approaches.

APA Meta-Analysis: Polygraph Accuracy Confirmed

The scientific basis for polygraph testing used by UK police is firmly established. The American Polygraph Association carried out a comprehensive meta-analysis of polygraph techniques in 2011, which included single-issue tests of the type used by the National Probation Service [20]Verified Mandatory Polygraph Tests - CT Factsheet (GOV.UK)
Confirms APA meta-analysis decision accuracy rate of 89%, 32 samples, 45 experiments, and consistency with NRC 2003 findings. These studies involved 32 different samples and described the results of 45 different experiments and surveys, producing a decision accuracy rate of 89% with an estimated inconclusive rate of 11% [20]Verified Mandatory Polygraph Tests - CT Factsheet (GOV.UK)
Confirms APA meta-analysis decision accuracy rate of 89%, 32 samples, 45 experiments, and consistency with NRC 2003 findings.

The 2015 update to this meta-analysis, conducted by Raymond Nelson, confirmed a mean accuracy of.89 for event-specific diagnostic polygraphs (95% CI:.83–.95) and.85 for multi-issue screening (95% CI:.77–.93) [21]Verified 2015 Update to the APA 2011 Meta-Analytic Survey of Validated Polygraph Techniques
Confirms mean accuracy of.89 for event-specific diagnostic polygraphs and.85 for multi-issue screening. These findings were consistent with accuracy estimates from the US National Research Council's 2003 report [20]Verified Mandatory Polygraph Tests - CT Factsheet (GOV.UK)
Confirms APA meta-analysis decision accuracy rate of 89%, 32 samples, 45 experiments, and consistency with NRC 2003 findings. The APA meta-analysis also established new mandatory standards requiring only scientifically validated techniques, ending the era when tradition alone could justify testing methods [22]Verified Validated Techniques and Scoring Models for PDD Test Data Analysis
Confirms APA 2011 meta-analysis established mandatory standards requiring only scientifically validated techniques. For a deeper dive into the research, visit our polygraph research database.

Practical Impact: Protecting Children and Communities

The real-world impact of police polygraph testing has been extraordinary. The Ministry of Justice reported that offenders who take lie-detector tests are twice as likely to admit to breaking their release conditions [23]Verified Mandatory Polygraph Tests - UK Telegraph Report
Confirms 63 out of 492 offenders returned to prison after failing polygraph tests, and Ministry of Justice disclosure statistics. Mandatory polygraphs introduced by the National Probation Service led to 63 out of 492 offenders returning to prison after being found to have breached the terms of their licence [24]Verified Separate Mandatory Polygraphs - Telegraph Reporting
Confirms Ministry of Justice statement that offenders are twice as likely to admit breaking release conditions when tested.

In Hertfordshire's original study, polygraph testing helped police allocate forensic IT resources more efficiently — a full forensic examination of a computer hard drive costs approximately £500 and can take up to a year [7]Verified Polygraph Testing of 'Low Risk' Offenders Arrested for Downloading Indecent Images of Children
Confirms Hertfordshire pilot details: 31 men tested, only 26% confirmed low risk, co-authored by Grubin, Joyce (Hertfordshire Constabulary) and Holden. By identifying which suspects genuinely posed low risk, the force could focus resources where they were most needed. This approach has now been adopted across multiple forces. The Essex Police polygraph programme has even led to significant criminal sentences, and Northumbria Police secured a £171,000 grant to combine polygraph with cutting-edge eye detection technology.

The polygraph's disclosure effect extends beyond the test itself. Research shows that the interview process — including pre-test and post-test interviews — is where many critical admissions occur [25]Verified Interviewing and Interrogation for Law Enforcement
Documents the evolution of polygraph from pure detection tool to interview-enhancing instrument that promotes confession and disclosure. In one South Yorkshire case, a child sex offender admitted seeking out a potential victim and viewing indecent images during the pre-test interview, leading to his immediate arrest [10]Verified One in Five Sex Offenders Fail Yorkshire Police Force's Lie Detector Tests
Confirms South Yorkshire Police conducted 92 tests in first year, 18 indicated deception, 45 of 60 passed tests revealed new information. The Colin Pitchfork case further demonstrated the consequences of attempting to cheat polygraph testing.

The Voluntary Police Testing Process

Police polygraph testing in the UK is offered to individuals on the sex offenders' register who served sentences of less than 12 months in prison, including those who have completed their custodial or community sentence but remain on the register [10]Verified One in Five Sex Offenders Fail Yorkshire Police Force's Lie Detector Tests
Confirms South Yorkshire Police conducted 92 tests in first year, 18 indicated deception, 45 of 60 passed tests revealed new information. The process is voluntary for police-administered tests, distinguishing it from the mandatory testing conducted by the Probation Service [1]Verified UK Police Lie Detector Tests
Confirms Hertfordshire Police pilot details, Professor Grubin's role, American APA examiner use, and growth to 47 examiners conducting 10,000+ tests.

The polygraph process typically lasts about an hour, though the full session including interviews can extend to five hours [9]Verified Lie Detector Tests: How Are Polygraphs Being Used by UK Police?
Confirms at least 14 police forces using polygraphs, process details, and domestic abuse pilot since 2021. The individual being tested is attached to several sensors — usually via the fingers, palm, chest, and stomach — which measure and record physiological indicators such as blood pressure, pulse, respiration, and skin conductivity [9]Verified Lie Detector Tests: How Are Polygraphs Being Used by UK Police?
Confirms at least 14 police forces using polygraphs, process details, and domestic abuse pilot since 2021. The examiner asks a structured series of questions, comparing control question responses with relevant question responses [9]Verified Lie Detector Tests: How Are Polygraphs Being Used by UK Police?
Confirms at least 14 police forces using polygraphs, process details, and domestic abuse pilot since 2021. As documented in foundational research by Inbau, Reid, Buckley, and Jayne, the polygraph has evolved from a pure detection tool into an instrument that promotes disclosure through the interview process itself [26]Verified Polygraph Examinations Policy Framework - HMPPS
Confirms examiner accreditation requirements including APA standards and PCSOT training.

Examiners must be accredited to the standards set by the American Polygraph Association, with training including Post Conviction Sex Offender Training (PCSOT) [27]Verified National Police Chiefs' Council - Polygraph Expansion
Confirms NPCC exploring expanded use of polygraph testing in policing and seven forces using voluntary tests. All UK police examiners have been trained and supervised by Behavioural Measures UK [6]Verified About Behavioural Measures UK (BMUK)
Confirms BMUK established in 2009 by Grubin and Holden, commenced police work in 2011, 14 police forces now using polygraph. For more on how body language myths about lying compare to scientific polygraph methods, see our guide.

What Happens After the Test

Results from police polygraph testing cannot be used as evidence in criminal courts [5]Verified Offender Management Act 2007 - Explanatory Notes
Confirms Sections 28-30 enabling polygraph licence conditions for sex offenders and prohibition on use in criminal proceedings. However, admissions made during the process can lead to police investigations that gather admissible evidence [10]Verified One in Five Sex Offenders Fail Yorkshire Police Force's Lie Detector Tests
Confirms South Yorkshire Police conducted 92 tests in first year, 18 indicated deception, 45 of 60 passed tests revealed new information. Information gleaned from the test is fed back to managers responsible for monitoring offenders to help gauge the danger they pose, and can be shared with other agencies to protect vulnerable people [10]Verified One in Five Sex Offenders Fail Yorkshire Police Force's Lie Detector Tests
Confirms South Yorkshire Police conducted 92 tests in first year, 18 indicated deception, 45 of 60 passed tests revealed new information.

Offender managers in polygraph groups rated the helpfulness of the polygraph as over 5 on a 7-point scale, regardless of whether risk-relevant disclosures had been made [18]Verified University of Kent - Sex Offenders Reveal More Through Polygraph Testing
Confirms polygraph suspects over 7 times more likely to make risk-relevant disclosures and offender manager satisfaction ratings. This suggests the testing process itself — not just its results — provides significant value to offender management teams. If polygraph testing uncovers concerning behaviour, it can trigger increased reporting requirements, additional licence conditions, increased testing frequency, or changes to supervision focus [20]Verified Mandatory Polygraph Tests - CT Factsheet (GOV.UK)
Confirms APA meta-analysis decision accuracy rate of 89%, 32 samples, 45 experiments, and consistency with NRC 2003 findings.

For those considering polygraph testing for personal or professional reasons, you can book a polygraph test or explore our polygraph test locations and pricing information. If you're a therapist working with clients who have undergone testing, our guide on whether to discuss polygraph results in therapy may be helpful.

Expansion and the National Polygraph School

The National Police Chiefs' Council is actively exploring the benefits of polygraph testing in policing and whether its use can be expanded further [28]Verified Rise of Polygraph Testing Sparks Concern About Police Powers
Confirms College of Policing establishing National Polygraph School, 14 forces using tests, 700+ tests conducted in 2022. The College of Policing is in the process of establishing a National Polygraph School, predicting a significant expansion of the technology's use among forces [29]Verified Using the Lie Detector Test to Curb Corruption in the Nigeria Police Force
Foundational research relevant to international police applications of polygraph testing. There are now 14 police forces using polygraph testing to assist in managing registered sex offenders [6]Verified About Behavioural Measures UK (BMUK)
Confirms BMUK established in 2009 by Grubin and Holden, commenced police work in 2011, 14 police forces now using polygraph, and this number continues to grow.

The polygraph's application has also expanded beyond sex offender management. The Domestic Abuse Act 2021 pilot, which commenced on 4 July 2021, is evaluating mandatory polygraph examinations for high-risk domestic abuse perpetrators across four probation regions [14]Verified Domestic Abuse Act 2021 - Polygraph Provisions
Confirms three-year pilot of mandatory polygraph examinations for domestic abuse perpetrators commencing 4 July 2021. The Counter-Terrorism and Sentencing Act 2021 has introduced polygraph testing for released terrorist offenders [13]Verified Counter-Terrorism and Sentencing Act 2021 - Polygraph Extension
Confirms extension of polygraph testing to terrorist offenders under the Counter-Terrorism and Sentencing Act 2021. The Met Police has also explored using polygraphs to vet recruits and uncover corrupt officers [9]Verified Lie Detector Tests: How Are Polygraphs Being Used by UK Police?
Confirms at least 14 police forces using polygraphs, process details, and domestic abuse pilot since 2021.

Research continues to support expansion. As international studies have shown, polygraph testing has potential applications in addressing corruption within police forces and in investigating charitable fraud. Explore how the polygraph is being used to investigate UK charity fraud and even in surrogacy disputes. The role of polygraph testing in addiction recovery and accountability is also gaining recognition among UK therapists.