Question to the Home Office:

To ask the Secretary of State for the Home Department, how many and what proportion of individuals on the terror watchlist are (a) UK citizens, (b) Dual national citizens, (c) UK citizens with at least one non-UK parent and (d) non-UK citizens.

It is longstanding policy not to discuss either the specific information held on any security-related watchlist, the source of the information or how it is used.

To do so would be harmful to the national security of the UK.