Question to the Cabinet Office:

To ask the Minister for the Cabinet Office, what estimate his Department has made of the number of (a) males and (b) females working for GCHQ in each year since 2010.

As at 31 March 2018, the GCHQ headcount is made up of 35% Women and 65% Men. These figures have remained constant since 2010. Further detail can be found in the recently published document “GCHQ Gender Pay Gap Report 2018”.