Skip to main content
Mayor of London logo London Assembly logo
Home

Mayor’s GPS tagging of offenders keeping Londoners safe

Created on
21 July 2022
  • Sadiq’s successful GPS tagging scheme which safeguards Londoners and protects communities now extended
  • Monitoring technology working to support and protect victims of knife crime and domestic abuse – with more than 300 tagged offenders recalled to prison
  • Pilot improving the management of offenders and placing onus on them to change behaviour, not victims

The Mayor of London, Sadiq Khan, has today announced an extension to his pioneering GPS tagging pilot programme which is continuing to tag knife crime and domestic abuse offenders released from prison.

The Mayor’s GPS tagging crime scheme recently surpassed 1,000 tagged offenders and is working to quickly identify those who break their license conditions, protect victims and crucially put the onus on perpetrators to change their behaviour, rather than victims.

Evidence from the ongoing evaluation of the pilot shows that the use of GPS tagging is reducing the risks offenders pose to their victims and working to help keep all Londoners safe.

The majority of all 1,095 knife crime and domestic abuse offenders who have been tagged are men and initial evidence from both pilots shows that GPS data is playing a significant role in detecting non-compliance and any increased risk to victims. 1

Latest figures show more than half (567) of the tagged offenders complied with their licence conditions during the period of GPS monitoring.

More than 300 of the tagged offenders who breached their tagged licence conditions were successfully recalled to prison for non-compliance or increase in risk – proving that the tagging scheme is also working effectively as an enforcement option.

The remaining cases are still live in the GPS tagging pilot.

The GPS tagging pilot, which started in February 20192, has now been extended through to March 2023 and applies to those who have served custodial sentences for knife crime offences, such as being in possession of a knife, robbery, aggravated burglary and GBH, as well as domestic abuse offenders. This pilot sees tag wearers being fitted with a mandatory GPS tracking device, which is issued under strict license conditions.

Real-time GPS data provides the London Probation Service with accurate location and tracking data and heatmap technology is used to show an overview of a tagged person’s movements during the course of a day, week or month as well as their lifestyle habits, ensuring that the probation service can closely monitor tagged offenders across all 32 London boroughs.

The data detects non-compliance from tagged offenders – including increased risk by those who may have entered an exclusion zone set-up to protect a victim once offenders have been released from prison. Previously, this behaviour might have gone untraced but now enforcement action can be taken promptly and where necessary to protect victims and bring perpetrators to account.

Data collected from the pilot has also been used to assist in crime mapping – the process with which crime incident patterns are analysed by police – to automatically cross-reference the movements of tagged offenders with reported crimes in London. 3Initial results of crime mapping indicates that the use of GPS tagging is a deterrent to further offending. Further evidence4 is set to be released this year as part of a GPS Knife Crime Tagging Evaluation Report by the Mayor's Office for Policing and Crime (MOPAC).

The Mayor’s funding and extension of the GPS tagging pilot is part of continued action taken by Sadiq to tackle knife crime and violence against women and girls through his refreshed VAWG strategy. The strategy is taking a public health approach to targeting the behaviour of those who perpetrate abuse and making sure they are the focus for change.

The Mayor of London, Sadiq Khan, said: “Tackling violence, protecting victims and keeping Londoners safe will always be my top priority and I’m really pleased that my GPS Knife Crime and Domestic Abuse Tagging Pilot is working quickly to identify those who break their license conditions, helping to keep the public safe and crucially putting the onus on behaviour change squarely at the perpetrators of violence, not their victims.

“Data collected so far shows that GPS tagging of knife crime and domestic abuse offenders works and that's why I'm extending this successful tagging pilot to March 2023, as part of my commitment to being tough on crime and tough on the causes of crime.

“Change will not happen overnight, but I believe that by working together we can help to stop the men who wish to do women harm and drive forward a lasting change in our society’s culture so that women and girls can finally live their lives free from fear, harassment or abuse.”

Kilvinder Vigurs, London Regional Director for the Probation Service, said: “The GPS tagging pilot has and continues to be integral to our work with a range of offenders, but with a specific focus on the prevention of Knife Crime and Domestic Abuse. We utilise and take advantage of all forms of technology to encourage offenders to comply with their prison licence conditions and focus on deterring them from committing further offences.”

Detective Superintendent Matt Pilch, Lead Responsible Officer for Domestic Abuse at the Metropolitan Police, said: “We are pleased to see an extension of this pilot which has allowed us to stop those who break their license conditions in their tracks. With this scheme we have been able to keep victims safe and prevent offenders from causing further harm.

“Domestic abuse and knife crime has a devastating impact and it is important we focus our efforts on addressing the perpetrators’ behaviour and take enforcement action where necessary. We know the majority of victims of domestic abuse are women and we are working hard to deliver a safe environment for women to go about their lives without the fear of becoming victims of violent crime. Tackling violence in all its forms is a top priority in the Met and we are committed to protecting those at risk wherever and however we can.”

Anonymised Domestic Abuse Case Study:

Mr Smith was sentenced in October 2021 at Crown Court to 10 months imprisonment following the offence of breach of his restraining order.

He has been the perpetrator of incidents of domestic abuse against his ex-partner on numerous occasions, including serious physical violence, stalking and harassment. He has previously breached his Restraining Order on eight separate occasions by contacting the victim.

Mr Smith was released in February 2022, after which there were ongoing concerns in relation to his alcohol use whilst in the community, leading to formal warnings.

In March 2022 GPS alerts showed that Mr Smith had not returned to his approved address and he was not contactable by telephone. GPS data and alerts later showed that he had entered the exclusion zone of his licence, linked to the victim. This led to enforcement action being taken, meaning his was recalled back to prison. He remains in prison at this time on the basis of evidence of increased risk of serious harm.

Notes to Editors

1) Evidence from the domestic abuse offenders pilot – which has 201 cases – shows that GPS tracking specifically has played a vital role in detecting 30 people, out of the 72 people recalled to prison, for non-compliance and any increased risk to victims. Nearly 900 people (894) have also been tagged as part of the knife crime pilot, with 269 of those cases having been recalled back to prison for non-compliance and posing an increased risk to victims. There are still 193 active cases running in both pilots.

2) Link to launch of pilot: /sites/default/files/gps_tagging_knife_crime_on_licence_final_for_publication.pdf.

3) Crime mapping is only applied to tag wearers assessed as more likely than not to reoffend and to reported serious violent, sexual and acquisitive incidents, to ensure that this is a proportionate use of time, resources and matches the purposes of the pilots.

4) Further evidence is set to be released this year as part of a GPS Knife Crime Tagging Evaluation Report by the Mayor's Office for Policing and Crime. The report will also record the impact of GPS tracking technology on reoffending from individuals issued with a tag as part of this pilot.

Need a document on this page in an accessible format?

If you use assistive technology (such as a screen reader) and need a version of a PDF or other document on this page in a more accessible format, please get in touch via our online form and tell us which format you need.

It will also help us if you tell us which assistive technology you use. We’ll consider your request and get back to you in 5 working days.