Gaitskellism
Wilson went on to become Prime Minister in the 1964 election, holding the position from 1964 to 1970 and from 1974 to 1976. Despite being a former Bevanite, Wilson largely followed Gaitskellite economic policies, and the former Gaitskellite Callaghan followed Wilson as Prime Minister from 1976 to 1979 and Party Leader from 1976 to 1980.
Living prime ministers of the United Kingdom
There have been ten periods when six living current or former prime ministers co-existed, with the longest being a nine-year period beginning with the first appointment (1834) of Robert Peel. The most recent period was from the appointment (1990) of John Major and the death (1995) of Harold Wilson. There has been one period (1754) with no living prime minister, a period of ten days that spanned the death of Henry Pelham on 6 March and the appointment of the Duke of Newcastle.