50 Codes that Changed the World: . . . And Your Chance to Solve Them! - Sinclair McKay (Hardback) 13-10-2022
Murder at No. 4 Euston Square: The Mystery of the Lady in the Cellar - Sinclair McKay (Paperback) 06-07-2021
Secret Britain: A journey through the Second World War's hidden bases and battlegrounds - Sinclair McKay (Hardback) 30-09-2021
Secret Britain: A journey through the Second World War's hidden bases and battlegrounds - Sinclair McKay (Paperback) 12-05-2022
The Secret Life of Bletchley Park: The History of the Wartime Codebreaking Centre by the Men and Women Who Were There - Sinclair McKay (Paperback) 01-08-2011
