Question to the Home Office:

To ask the Secretary of State for the Home Department, how many people have been arrested for being a supporter of (a) the Maniacs Murder Cult and (b) the Russian Imperial Movement in the latest reported quarter, July to September 2025.

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 up to year ending September 2025, was published on 18 December 2025. This can be accessed on GOV.UK in the following link: Operation of police powers under TACT 2000, to September 2025 - GOV.UK

Data is not published on the specific proscribed organisation that the arrest, charge or conviction relates to, with the exception of Palestine Action. Since the proscription of Palestine Action on 5 July 2025, arrests linked to supporting this group have materially altered the volume and demographic makeup of terrorism-related arrests. To preserve the clarity and time-series compatibility, arrests and charges relating to supporting Palestine Action are shown separately, while still being included in the overall total of all arrests in the publication. The separation does not imply that this cohort has been treated differently to other arrests and charges.

The investigation and prosecution of criminal offences, including determining whether an offence has been committed or not, is a matter for the police and Crown Prosecution Service (CPS) who are operationally independent.

The Government is absolutely clear that support for proscribed organisations is unacceptable. Anyone expressing support for a proscribed organisation should expect to be investigated by the police.