Strathclyde entered the
House of Lords in 1986, becoming a Junior Whip in 1988, then Minister for Tourism in 1989. Between 1990 and 1992, he was Minister for Agriculture and Fisheries in the
Scottish Office. He then served in the
Department of the Environment and the
Department of Trade and Industry, before being appointed the Conservative Party Chief Whip in the House of Lords in 1994, succeeding
Lord Ullswater. The next year, he was sworn of the
Privy Council. In 1998 Strathclyde, along with the Conservative front bench in the Lords, threatened to tender his resignation if the party refused to accept a proposed compromise plan for reform of the Lords that had been negotiated with the
Labour Party by
Lord Cranborne, the Conservatives' leader in the Lords, unbeknown to the Leader of the Opposition (in the Commons)
William Hague, and to his annoyance. Hague, however, accepted the proposals, dismissing Cranborne for the conduct in negotiations, and Strathclyde was appointed to succeed him. Under his leadership, the
House of Lords Act 1999 passed: under this, Strathclyde was elected by other peers as one of the
92 hereditary peers to remain in the House of Lords. He won Channel 4 Peer of the Year 2000, and Spectator Peer of the Year 2004. When the Conservatives formed a coalition government under
David Cameron in May 2010, Strathclyde became
Leader of the House of Lords and
Chancellor of the Duchy of Lancaster, with a seat in the Cabinet. On 7 January 2013, Strathclyde announced that he would be stepping down as Leader of the House of Lords, and resigning from the Cabinet with immediate effect, to pursue a second business career. He was succeeded by
Lord Hill of Oareford. He was subsequently appointed a
Member of the Order of the Companions of Honour for his services to the Lords. ==Marriage and children==