Complex sentence: Chesham took his seat in the House of Lords on his father's death in 1952, and later served in the Conservative administrations of Harold Macmillan and Sir Alec Douglas-Home as Joint Parliamentary Secretary to the Ministry of Transport from 1959 to 1964.
Split into simpler sentences: Chesham took his seat in the House of Lords on his father's death in 1952, and later served in the Conservative administrations of Harold Macmillan and Sir Alec Douglas-Home. He was Joint Parliamentary Secretary to the Ministry of Transport from 1959 to 1964.