The collection comprises a wide variety of material from a number of different sources which have been deemed too small to be considered individual collections in their own right and have been grouped together under the heading "miscellaneous". Subjects covered include First and Second World Wars, the Falklands Campaign, and recollections of Sir Winston Churchill.

Includes: notes prepared by Alan Findlay on Keynes' career, family; letter from Anne Keynes to Alan Findlay in response to letter of condolence; copy of a scientific autobiography of Keynes; material about Sir Geoffrey Keynes; notes for obituary of Keynes and for a speech by Correlli Barnett on Keynes' 90th birthday.

The papers include: correspondence from the 1960s to the 2000s, with some papers relating to the Anti-Submarine Experimental Establishment (1942) and naval radar research (1944-45); volumes of notes on experiments from 1947 to 1979; research papers and data files from the late 1970s to 1990s.