Spicer joined the Conservative Party, and at the 1966 general election, he challenged Manny Shinwell in the safe Labour Easington constituency as the youngest parliamentary candidate in the country against the eldest. He stood in Easington again at the 1970 general election before he was elected at the February 1974 general election for South Worcestershire. He represented South Worcestershire until 1997. When boundary changes abolished the constituency; he then moved to the West Worcestershire seat, which he represented until his retirement from the Commons.