Question to the Home Office:

To ask the Secretary of State for the Home Department, what information her Department holds on the number of British citizens who have left the UK to join ISIS and who have (a) returned home and (b) been prevented from returning home.

Approximately 850 UK linked individuals of national security concern have travelled to engage with the Syrian conflict. We estimate that just under half have returned and approximately 15% are now dead. This number includes all those of national security concern, not just those affiliated with Daesh.

Everyone who returns from taking part in the conflict in Syria or Iraq must expect to be investigated by the police to determine if they have committed criminal offences, and to ensure that they do not pose a threat to our national security.