Electronic monitoring caseload
Electronic monitoring was introduced in 1999 to support the police, courts, prisons and wider justice system in England and Wales.
It is a way of remotely monitoring and recording information on an individual’s whereabouts or movements, using an electronic device which is normally fitted to a subject’s ankle. The device transmits this information, via a base unit installed in a subject’s residence, to a monitoring centre where it is processed and recorded in case management systems. Staff in the monitoring centre review this information to see whether an individual is complying with the conditions of their curfew or other electronically monitored requirement. Where a subject is not complying, the electronic monitoring provider either acts on this information themselves or provides it to the relevant authority to take the necessary enforcement action.
The figures include details of those on location monitoring tags, which were introduced in November 2018.
The figures also include those fitted with an alcohol monitoring device. Alcohol monitoring was introduced to courts in Wales in October 2020 and expanded to courts in England on 31 March 2021 to support the new community sentencing option, the Alcohol Abstinence and Monitoring Requirement (AAMR). For offenders being released from custody whose offending and risk is alcohol related, an Alcohol Monitoring on Licence (AML) additional licence condition was introduced in Wales in November 2021 and rolled out in England in June 2022.
Caseload statistics after 2 June 2025 are not directly comparable to those published previously due to changes in the definition and methodology used to classify individuals as "tagged". For data prior to 2025, please visit the data source link below.
Visit Electronic Monitoring Statistics for data sources and more details.
Electronic monitoring caseload
Total caseload.
31 March 2026
28,687
Data source
The data source for this measure and more detailed information can be found in the Electronic Monitoring Statistics Publication publication.
Publication date
Published: 23 April 2026.
Bail
As a condition of court bail.
31 March 2026
9,674
Data source
The data source for this measure and more detailed information can be found in the Electronic Monitoring Statistics Publication publication.
Publication date
Published: 23 April 2026.
Court sentence
As a requirement of a court sentence, including community orders and suspended sentences. These figures also include those with an Alcohol Abstinence Monitoring Requirement.
31 March 2026
3,922
Data source
The data source for this measure and more detailed information can be found in the Electronic Monitoring Statistics Publication publication.
Publication date
Published: 23 April 2026.
Post release
As a licence condition following release from custody, including Home Detention Curfew. These figures also include those with an Alcohol Monitoring Requirement.
31 March 2026
10,601
Data source
The data source for this measure and more detailed information can be found in the Electronic Monitoring Statistics Publication publication.
Publication date
Published: 23 April 2026.
Immigration
As a condition of immigration bail, managed by the Home Office.
31 March 2026
4,392
Data source
The data source for this measure and more detailed information can be found in the Electronic Monitoring Statistics Publication publication.
Publication date
Published: 23 April 2026.
Specials
Used to intensively monitor a small number of subjects including: some of the highest risk offenders managed under Multi-Agency Public Protection Arrangements (MAPPA); those granted bail by the Special Immigration Appeals Commission (SIAC); and those made subject to Terrorism Prevention and Investigation Measures (TPIMs). In these cases, monitoring may be by way of a Global Positioning System (GPS) device rather than a radio frequency (RF) device.
31 March 2026
98
Data source
The data source for this measure and more detailed information can be found in the Electronic Monitoring Statistics Publication publication.
Publication date
Published: 23 April 2026.
Alcohol monitoring
Alcohol monitoring was introduced in October 2020 and went live throughout England and Wales on 31 March 2021 to support the new community sentencing option, the Alcohol Abstinence and Monitoring Requirement (AAMR). An AAMR may only be used when sentencing for alcohol-related criminal behaviour and it imposes a total ban on drinking alcohol for up to 120 days. Compliance with the ban is monitored electronically using an alcohol device which continuously monitors for the presence of alcohol.
31 March 2026
5,080
Data source
The data source for this measure and more detailed information can be found in the Electronic Monitoring Statistics Publication publication.
Publication date
Published: 23 April 2026.