Green was a junior government minister, as Parliamentary Secretary to the Ministry of Labour from 1961 to 1962, Parliamentary Secretary to the Board of Trade from 1962 to 1963, and Financial Secretary to the Treasury from 1963 to 1964.
Green was a junior government minister, as Parliamentary Secretary for to the Minister of Labour from 1961 to 1962 and to the President of the Board of Trade from 1962 to 1963. He was Financial Secretary to the Treasury from 1963 to 1964.