In 1955 he became MP for
South Gloucestershire. Shortly after becoming an MP he launched a private member's bill to improve compensation for compulsory land purchases. He received a second reading for his bill in February 1958, against government advice, and its general principles were incorporated in the Town and Country Planning Act of 1959. He became secretary of the Conservative MPs' agriculture committee (1956–62), and chairman of its small farms subcommittee (1957–58). He also became parliamentary private secretary to
Airey Neave. Under
Harold Macmillan and
Alec Douglas-Home he held the position of Joint Parliamentary Secretary of Housing and Local Government (1962–4). He became an opposition spokesman on land and natural resources 1964–65 and subsequently an executive member of the
1922 Committee. In 1970 Corfield was briefly
Minister of State at the newly formed
Department of Trade and Industry under
John Davies. He subsequently held the positions of Minister for Aviation Supply and Aerospace Minister (1970–2) where he was responsible for the cancellation of the
Black Arrow rocketry programme but provided financial assistance to
Rolls-Royce (whose
Filton,
Bristol factory was within his constituency) when it ran into difficulties that hampered its defence commitments. This help included the
nationalisation of the strategically significant aero-engine part of RR. He also presided over the first full scale roll-out of
Concorde. He returned to the backbenches in 1972 and did not contest his Gloucestershire seat in the
general election of February 1974, having decided to stand down because of his disagreement with the government's then economic policies and the leadership of
Edward Heath and a conviction - proved correct - that his party would lose the election. ==Later career==