£561 bn in Total Departmental Expenditure Limits across 16 of the 24 ministerial departments, FY 2026-27 plans. Department of Health and Social Care alone is 40% of it.
Source: HM Treasury Main Estimates, Departmental DEL tables. Refreshed once per year (late April / mid-May). DEL = Departmental Expenditure Limit. AME (Annually Managed Expenditure, e.g. welfare in DWP, debt interest in HMT) is much larger and is not included in the ranking here.
These departments are either bundled into a Mains aggregate (“Law Officers' Departments”, “Small and Independent Bodies”) or fall outside the HM Treasury Estimates altogether (the two House of Parliament leaderships).
Attorney General's OfficeBundled into Mains "Law Officers' Departments" with the Advocate General; per-office figures need each office's Main Estimates Memorandum.
Scotland OfficeBundled into Mains "Small and Independent Bodies"; not separately disclosed in the headline DEL tables (NB this is the UK government office, not the Scottish Government).
Wales OfficeBundled into Mains "Small and Independent Bodies"; not separately disclosed in the headline DEL tables (NB this is the UK government office, not the Welsh Government).
Northern Ireland OfficeBundled into Mains "Small and Independent Bodies"; not separately disclosed in the headline DEL tables (NB this is the UK government office, not the NI Executive).