Question to the Home Office:

To ask the Secretary of State for the Home Department, how many British citizens have left the UK to join a proscribed Islamic terrorist organisation in each of the last five years.

We do not publish figures on the number of individuals who have left the UK to join proscribed terrorist groups for reasons of national security. Membership and support for a proscribed terrorist organisation is an offence under sections 11 and 12 of the Terrorism Act 2000.

Everyone who returns to the UK after engaging in terrorism-related activity overseas must expect to be investigated by the police and, where there is evidence that a crime has been committed, prosecuted.