Sir Maurice Oldfield became a Visiting Fellow at All Souls College, Oxford, when he retired from being head of MI6. No details have previously been given but recently his report to the college has been unearthed. It provides valuable insights but shows he was not a professional historian. He was looking at the interaction between unofficial advice and official policy, and picked on three key figures from before the Second World War. Comprehensive accounts of their exploits have only recently been published, significantly using material not available in 1978‒9. His choice is impressive; his judgment was astute.