Despite continuing his legal practice, he was attentive to constituency matters, and increased his majority in the 1955 general election. Politically, he was a founder of the One Nation Group. He was Parliamentary Private Secretary to the Attorney-General, Sir Lionel Heald, for three years, and then held three ministerial positions. He was appointed as a Parliamentary Under-Secretary of State at the Home Office in 1957. He took charge of the bill that became the Homicide Act 1957, earning the respect of Rab Butler, then Home Secretary.