third of his Cabinet and instituted many other changes. Harold Macmillan: Prime Minister Rab Butler: Deputy Prime Minister and First Secretary of State The Viscount Dilhorne: Lord High Chancellor of Great Britain The Viscount Hailsham: Lord President of the Council and Minister of Science Henry Brooke: Secretary of State for the Home Department The Earl of Home: Secretary of State for Foreign Affairs Edward Heath: Lord Keeper of the Privy Seal Reginald Maudling: Chancellor of the Exchequer Duncan Edwin Sandys: Secretary of State for the Colonies and Secretary of State for Commonwealth Relations Frederick Erroll: President of the Board of Trade Iain Macleod: Chancellor of the Duchy of Lancaster Sir Edward Boyle: Minister of Education John Boyd-Carpenter: Chief Secretary to the Treasury and Paymaster-General Ernest Marples: Minister of Transport Julian Amery: Minister of Aviation Peter Thorneycroft: Minister of Defence Michael Noble: Secretary of State for Scotland John Hare: Minister of Labour Christopher Soames: Minister of Agriculture Sir Keith Joseph: Minister of Housing and Local Government and Welsh Affairs Enoch Powell: Minister of Health Bill Deedes: Minister without Portfolio Douglas-Home ministry October 1963 – October 1964 Sir Alec Douglas-Home: Prime Minister and First Lord of the Treasury The Viscount Dilhorne: Lord High Chancellor of Great Britain Quintin Hogg: Lord President of the Council and Minister of Science Selwyn Lloyd: Leader of the House of Commons and Lord Keeper of the Privy Seal Reginald Maudling: Chancellor of the Exchequer Rab Butler: Secretary of State for Foreign Affairs Henry Brooke: Secretary of State for the Home Department Sir Keith Joseph: Minister of Housing and Local Government Peter Thorneycroft: Minister of Defence Julian Amery: Minister of Aviation Ernest Marples: Minister of Transport Frederick Erroll: Minister of Power Edward Heath: Secretary of State for Industry, Trade, and Regional Development and President of the Board of Trade Duncan Sandys: Secretary of State for the Colonies and Secretary of State for Commonwealth Relations Sir Edward Boyle: Minister of Education Anthony Barber: Minister of Health John Boyd-Carpenter: Chief Secretary to the Treasury and Paymaster-General Joseph Godber: Minister of Labour Geoffrey Rippon: Minister of Public Works Christopher Soames: Minister of Agriculture, Fisheries and Food Michael Noble: Secretary of State for Scotland The Viscount Blakenham: Chancellor of the Duchy of Lancaster William Deedes: Minister without Portfolio The Lord Carrington: Leader of the House of Lords and Minister without Portfolio Changes April 1964 – Quintin Hogg became Secretary of State for