407,415 civil servants across 21 of the 24 ministerial departments, as at December 2025. The five largest employers account for 77% of them.
Figures are rounded to the nearest five. They count civil servants only. They do not include armed forces personnel (in MoD), NHS staff (in DHSC) or police officers (in the Home Office).
The following ministerial departments either roll up into a larger ONS aggregate (e.g. the Attorney General's family) or sit inside the Cabinet Office cluster and are not separately broken out in Table 8.