He held the seat until his defeat at the 1966 general election , serving as a senior Cabinet in the government of Harold Macmillan .
On a slightly reduced turnout , Thorneycroft held the seat for the Conservatives , a narrowly increased majority of 2,139 .
Thorneycroft held the seat until Thorneycroft 's defeat at the 1966 general election , serving as a senior Cabinet in the government of Harold Macmillan .
On a slightly reduced turnout , Thorneycroft held the seat for the Conservatives , a narrowly increased majority of 2,139 .