Terrorism-related arrests, Great Britain
People arrested for terrorism-related activity in Great Britain each quarter, all arrests and those not linked to supporting Palestine Action, with the year to June and the people in custody for terrorism and terrorism-connected offences, from the Home Office's statistics.
All arrests
3,867
Year ending Jun 2026 · 3,630 of them linked to supporting Palestine Action; 275 people in custody for terrorism and terrorism-connected offences at the end of June 2026
Verified against source, 9 November 2026, 15:14 UTC- All arrests
- Not linked to Palestine Action
Source: Home Office. Contains public sector information licensed under the Open Government Licence v3.0.
Data table
9 periods, newest first
| Period | All arrests | Not linked to Palestine Action |
|---|---|---|
| Apr–Jun 2026 | 810 | 57 |
| Jan–Mar 2026 | 63 | 41 |
| Oct–Dec 2025 | 1,224 | 62 |
| Jul–Sep 2025 | 1,770 | 77 |
| Apr–Jun 2025 | 58 | 58 |
| Jan–Mar 2025 | 42 | 42 |
| Oct–Dec 2024 | 78 | 78 |
| Jul–Sep 2024 | 56 | 56 |
| Apr–Jun 2024 | 62 | 62 |
Source and licence
- Publisher
- Home Office
- Check it yourself
- https://www.gov.uk/government/collections/operation-of-police-powers-under-the-terrorism-act-2000
- Licence
- Open Government Licence v3.0 – Contains public sector information licensed under the Open Government Licence v3.0.
- Retrieved
- 9 November 2026, 14:58 UTC
- Raw files fetched
- https://www.gov.uk/api/content/government/statistics/operation-of-police-powers-under-tact-2000-to-june-2026SHA-256 17ba9ab14d0e756aa356be37210cbb6116a034a3170e7405d455521d357017f2 · 20,168 bytes
- https://assets.publishing.service.gov.uk/media/6ac65d7de8ef5609e7c932fa/operation-police-powers-terrorism-jun2026-quarterly-tables.odsSHA-256 bb430666d4a234ff38ece057addbe71f299f1f78ebe8d655ab67749d12d6efde · 183,599 bytes
Verification
Verified against source, 9 November 2026, 15:14 UTC Run at 9 November 2026, 15:14 UTC; 18 of 18 figures matched the live source.
| Result | Check | Detail |
|---|---|---|
| Pass | Provenance recorded | Home Office; Open Government Licence v3.0; retrieved 2026-11-09T14:58:55Z; 2 raw file(s) |
| Pass | Raw files match recorded SHA-256 | 2 of 2 files intact |
| Pass | Re-parsing raw files reproduces figures | 18 of 18 figures and the headline reproduced; the meta's accreditation and year_ending and custody and quarters match |
| Pass | Figures are finite numbers | 18 figures, 0 invalid |
| Pass | Live source matches every figure | 18 of 18 figures match exactly after downloading 2 source file(s) again (2 byte-identical); the headline matches; the meta's accreditation and year_ending and custody and quarters match |
| Pass | GOV.UK table is current | latest period 2026-06-30 ended 132 days before retrieval (limit 300), from Operation of police powers under the Terrorism Act 2000, to June 2026: quarterly data tables |
| Pass | Arrests linked and not linked to Palestine Action make up all arrests | 11 of 11 cases of the quarters and years give linked and other arrests that add up to all arrests |
| Pass | Each year ending is its four quarters | 4 of 4 cases of the years ending June give their four quarters' arrests |
| Pass | England and Wales and Scotland make up Great Britain's people in custody | 9 of 9 cases of the quarters' people in custody in England and Wales and in Scotland add up to Great Britain's |
| Pass | Source page answers | https://www.gov.uk/government/collections/operation-of-police-powers-under-the-terrorism-act-2000 – HTTP 200 |
Notes
- Arrests for offences the Counter Terrorism Policing Headquarters considers terrorism-related, at the time of arrest or later in the investigation, under the Terrorism Act's section 41 and other legislation, by the quarter of arrest (the Home Office's notes 2 and 5). Recent figures can change as cases progress.
- Palestine Action was proscribed on the 5th of July 2025; arrests linked to supporting it are counted from then and shown apart (the Home Office's note 7). The line of all arrests includes them.
- People in custody are those held for terrorism and terrorism-connected offences, on remand or sentenced, at the end of each quarter (the Home Office's note 2); from the 30th of September 2020 the Home Office counts terrorism-connected offenders, so earlier figures are not comparable (its note 4).
- The Home Office publishes these as accredited official statistics.