In 1985, Milner-Barry fiercely defended the reputation of Gordon Welchman, who had come under posthumous criticism for publishing details about the wartime work of Hut 6. In 1992, echoing his wartime visit to 10 Downing Street, Milner-Barry was a member of a party who delivered a petition to the Prime Minister calling on the government to help preserve Bletchley Park, which was then under threat from demolition.Ted Enever, Britain's Best Kept Secret, 2000, , pp. 84-85
