1916- . British Conservative politician, party leader 1965-75. As prime minister 1970-74 he took the UK into the European Community, but was brought down by economic and industrial relations crises at home. Heath entered Parliament 1950, was minister of Labour 1959-60, and as Lord Privy Seal 1960-63 conducted abortive negotiations for Common Market (European Community) membership. He succeeded Home as Conservative leader 1965, the first elected leader of his party. Defeated in the general election 1966, he achieved a surprise victory 1970, but his confrontation with the striking miners as part of his campaign to control inflation led to his defeat Feb 1974 and again Oct 1974. He was replaced as party leader by Margaret Thatcher 1975, and has since become increasingly critical of her policies and her opposition to the UK's full participation in the EC.