Francis Arthur Cockfield, Baron Cockfield, PC, was by turns a civil servant, a company director, a Conservative Party politician, and a European Commissioner. He served as Minister of State at the Treasury from 1979 to 1982, as Secretary of State for Trade from 1982 until 1983, as Chancellor of the Duchy of Lancaster from 1983 until 1984, and a member of the European Commission from 1984 to 1988. He is known as 'The Father of the Single Market'.

William John Biffen, Baron Biffen,, was a British Conservative Party politician. He was a Member of Parliament from 1961 to 1997, and served in Margaret Thatcher's cabinet; he then served in the House of Lords.