Question to the Home Office:

To ask the Secretary of State for the Home Department, how many UK nationals are suspected of leaving the UK in order to support the activities of Boko Haram and their splinter group Islamic State West Africa Province (ISWAP) in West Africa in the last five years.

For reasons of national security we cannot be specific about the number of UK nationals suspected of leaving the UK in order to support the activities of Boko Haram or Islamic State West Africa Province.

Anyone who returns to the UK from engaging in terrorist activities overseas should expect to be investigated to determine if they have committed criminal offences or pose a threat to our national security. Where evidence of crimes exist, those responsible should expect to be prosecuted for them. Decisions on prosecution are taken independently of Government by the police and the Crown Prosecution Service.