The agencies responsible for the government of the United Kingdom consist of a number of ministerial departments (usually headed by a Secretary of State) and non-ministerial departments headed by senior civil servants.

Departments of the United Kingdom Government

Ministerial Departments

• Cabinet Office (CO) [1]
  • Her Majesty's Stationery Office (HMSO) [1]
• Department for Constitutional Affairs (DCA) [1]
• Department for Culture, Media and Sport (dcms) [1]
• Ministry of Defence (MoD) [1]
• Department for Education and Skills (DfES) [1]
• Department for Environment, Food and Rural Affairs (defra) [1]
• Foreign and Commonwealth Office (FCO) [1]
• Department of Health (DH) [1]
• Home Office (HO) [1]
• Department for International Development (DFID) [1]
• Law Officers' Department (LSLO) [1]
• Northern Ireland Office (NIO) [1]
• Office of the Deputy Prime Minister (ODPM) [1]
• Office of the Leader of the House of Commons [1]
• Prime Minister's Office (No 10) [1]
• Privy Council Office (PCO) [1]
• Scotland Office (SO) [1]
• Department of Trade and Industry (dti) [1]
• Department for Transport (DfT) [1]
• HM Treasury (HMT) [1]
• Wales Office (WO) [1]
• Department for Work and Pensions (DWP) [1]

• The British Council [1]
• British Trade International [1]
• Charity Commission [1]
• Commissioners for the Reduction of the National Debt (CRND) [1]
• Crown Estate [1]
• Crown Prosecution Service (CPS) [1]
• Export Credits Guarantee Department ECGD [1]
• Food Standards Agency [1]
• Forestry Commission [1]
• HM Customs & Excise (HMCE) [1]
• Inland Revenue (IR) [1]
• Invest UK [1]
• Office for Standards in Education (OFSTED) [1]
• Office for the Regulation of Electricity and Gas (NI) (OFREG) [1]
• Office of Communications (Ofcom) [1]
• Office of the E-envoy (OeE) [1]
• Office of Fair Trading (OFT) [1]
• Office of Gas and Electricity Markets/Gas and Electricity Markets Authority (OFGEM) [1]
• Office of Government Commerce (OGC) [1]
• Office of the Information Commissioner (OIC) [1]
• Office of Science and Technology (OST) [1]
• Office of the International Rail Regulator (OIRR) [1]
• Office of the Rail Regulator (ORR) [1]
• Office of Water Services (OFWAT) [1]
• Postal Services Commission (PSC) [1]
• Public Works Loan Board (PWLB) [1]
• Serious Fraud Office (SFO) [1]
• Trade UK Partners [1]