List of Prime Ministers of Queen Elizabeth II
| Portrait | Name | |||
| Took office | Left office | |||
| Sir Winston Churchill | 26 October 1951 | 7 April 1955 | |
| Sir Anthony Eden | 7 April 1955 | 10 January 1957 | |
| Harold Macmillan | 10 January 1957 | 19 October 1963 | |
| Sir Alec Douglas-Home | 19 October 1963 | 16 October 1964 | |
| Harold Wilson | 16 October 1964 | 19 June 1970 | |
| Edward Heath | 19 June 1970 | 4 March 1974 | |
|
| Harold Wilson | 4 March 1974 | 5 April 1976 | |
| James Callaghan | 5 April 1976 | 4 May 1979 | |
| Margaret Thatcher | 4 May 1979 | 28 November 1990 | |
| John Major | 28 November 1990 | 2 May 1997 | |
| Tony Blair | 2 May 1997 | 27 June 2007 | |
| Gordon Brown | 27 June 2007 | 11 May 2010 | |
| David Cameron | 11 May 2010 |
List of Government Departments
Ministerial departments
· Attorney General's Office
· Cabinet Office
· Department for Business, Innovation and Skills
· Department for Communities and Local Government
· Department for Culture, Media and Sport
· Department for Education
· Department for Environment, Food and Rural Affairs
· Department for International Development
· Department for Transport
· Department for Work and Pensions
· Department of Energy and Climate Change
· Department of Health
· Foreign and Commonwealth Office
· Her Majesty's Treasury
· Home Office
· Ministry of Defence
· Ministry of Justice
· Northern Ireland Office
· Office of the Advocate General for Scotland
· Office of the Leader of the House of Commons
· Office of the Leader of the House of Lords
· Scotland Office
· UK Export Finance
· Wales Office
Non-ministerial departments
- Charity Commission for England and Wales
- Commissioners for the Reduction of the National Debt
- Competition and Markets Authority
- Crown Prosecution Service
- Food Standards Agency
- Forestry Commission
- Government Actuary's Department
- Her Majesty's Land Registry
- Her Majesty's Revenue and Customs
- National Crime Agency
- Office for Standards in Education, Children's Services and Skills
- Office of Fair Trading
- Office of Gas and Electricity Markets
- Office of Qualifications and Examinations Regulation
- Office of Rail Regulation
- Ordnance Survey
- Public Works Loan Board
- Serious Fraud Office
- Supreme Court of the United Kingdom
- The National Archives
- Treasury Solicitor's Department
- UK Statistics Authority
- UK Trade & Investment
- Water Services Regulation Authority
House of Windsor
The house name Windsor was adopted in 1917, during World War I. It was changed from Saxe-Coburg-Gotha because of wartime anti-German sentiment in the United Kingdom.