Question to the Home Office:

To ask the Secretary of State for the Home Department, pursuant to the Answer of 21 October 2017 to Question 49107, on Islamic State: British nationals abroad, how many of those people (a) travelled abroad to take part in the Syrian conflict in each year of that conflict and (b) have returned to the UK.

Approximately 850 UK-linked individuals of national security concern have travelled to take part in the Syrian conflict. We estimate that just under half of these have returned and that approximately 15 per cent have been killed. For reasons of national security, we are unable to provide a breakdown of the number of travellers and returners for each year.