 Peter Thorneycroft, then President of the Board of Trade, named him as his Parliamentary Private Secretary in 1952; he served for only a year.After the 1959 general election, Maydon was Chairman of the Conservative Parliamentary Party Defence Committee for two years.Harold Macmillan brought him into government as Joint Parliamentary Secretary to the Ministry of Pensions and National Insurance from July 1962, where he served alongside Margaret Thatcher.