After Churchill's retirement in 1955, Pitblado rounded out his service at No 10 with brief service to his successor, Anthony Eden (later Earl of Avon) in 1955–1956. He then returned to the ministerial civil service and served in a variety of posts. He became Permanent Secretary at the Ministry of Power in 1966–1969, and Permanent Secretary at the Ministry of Technology in 1969–1970.[citation needed]