Other ministerial offices:Other ministerial offices, Leader of the Opposition in the Lords, Shadow Leader of the House of Lords, In office, 4 March 1974 – 4 May 1979Leader, Edward Heath, , Margaret Thatcher, Preceded byThe Lord ShackletonSucceeded byThe Lord PeartIn office, 16 October 1964 – 20 June 1970Leader, Alec Douglas-Home, , Edward Heath, Preceded byThe Earl Alexander of HillsboroughSucceeded byThe Lord ShackletonSecretary of State for EnergyIn office, 8 January 1974 – 4 March 1974Prime MinisterEdward HeathPreceded byOffice establishedSucceeded byEric VarleyChairman of the Conservative PartyIn office, 7 April 1972 – 4 March 1974LeaderEdward HeathPreceded byPeter ThomasSucceeded byWilliam WhitelawSecretary of State for DefenceIn office, 20 June 1970 – 8 January 1974Prime MinisterEdward HeathPreceded byDenis HealeySucceeded byIan Gilmour, Leader of the House of Lords, , Minister without Portfolio, In office, 20 October 1963 – 16 October 1964Prime MinisterAlec Douglas-HomePreceded by, The Viscount Hailsham, , Bill Deedes, Succeeded by, The Earl of Longford, , George Thomson, First Lord of the AdmiraltyIn office, 14 October 1959 – 20 October 1963Prime MinisterHarold MacmillanPreceded byThe Earl of SelkirkSucceeded byThe Earl JellicoeHigh Commissioner to AustraliaIn office, 26 May 1956 – 14 October 1959Prime Minister, Sir Anthony Eden, , Harold Macmillan, Preceded byStephen HolmesSucceeded bySir William OliverParliamentary Secretary to the Ministry of DefenceIn office, 18 October 1954 – 26 May 1956Prime Minister, Sir Winston Churchill, , Sir Anthony Eden, Preceded byNigel BirchSucceeded byThe Earl of GosfordParliamentary Secretary to, the Ministry of Agriculture and FoodIn office, 5 November 1951 – 18 October 1954Serving with Richard NugentPrime MinisterSir Winston ChurchillPreceded by, The Earl of Listowel, , Arthur Champion, Succeeded by, Richard Nugent, , The Earl St Aldwyn, , In office, 4 March 1974 – 4 May 1979, , Edward Heath, , Margaret Thatcher, , The Lord Shackleton, The Lord Peart, In office, 16 October 1964 – 20 June 1970, , Alec Douglas-Home, , Edward Heath, , The Earl Alexander of Hillsborough, The Lord Shackleton, In office, 8 January 1974 – 4 March 1974, Edward Heath, Office established, Eric Varley, In office, 7 April 1972 – 4 March 1974, Edward Heath, Peter Thomas, William Whitelaw, In office, 20 June 1970 – 8 January 1974, Edward Heath, Denis Healey, Ian Gilmour, In office, 20 October 1963 – 16 October 1964, Alec Douglas-Home, , The Viscount Hailsham, , Bill Deedes, , , The Earl of Longford, , George Thomson, , In office, 14 October 1959 – 20 October 1963, Harold Macmillan, The Earl of Selkirk, The Earl Jellicoe, In office, 26 May 1956 – 14 October 1959, , Sir Anthony Eden, , Harold Macmillan, , Stephen Holmes, Sir William Oliver, In office, 18 October 1954 – 26 May 1956, , Sir Winston Churchill, , Sir Anthony Eden, , Nigel Birch, The Earl of Gosford, In office, 5 November 1951 – 18 October 1954Serving with Richard Nugent, Sir Winston Churchill, , The Earl of Listowel, , Arthur Champion, , , Richard Nugent, , The Earl St Aldwyn