Question to the Home Office:

To ask the Secretary of State for the Home Department, how many people have been (a) investigated and (b) deported for supporting groups proscribed under the Terrorism Act 2000 in the last ten years by proscribed group.

The Government takes proscription offences very seriously. It is an offence under Section 12 of the Terrorism Act 2000 for a person to invite support for a proscribed organisation or express an opinion or belief that is supportive of a proscribed organisation.

Data on arrests, charges and convictions for the proscription offences in sections 11 to 13 of the Terrorism Act 2000 can be found in the quarterly Home Office publication ‘Operation of Police Powers under the Terrorism Act 2000’.

The most recent publication was published on 12 December 2024 and includes data up to the year ending September 2024: https://www.gov.uk/government/statistics/operation-of-police-powers-under-tact-2000-to-september-2024.

Data is not published on investigations or deportations relating to section 12 offences. Data providers are not required to provide further detail on events leading to the arrest. Collecting and verifying the data requested to answer this question could only be done at disproportionate cost to the organisations responsible.