Harold Gordon "Tanky" Challenor, MM (16 March 1922 – 28 August 2008) was a wartime member of the SAS, decorated for his part in Operation Speedwell. After the war he joined the Metropolitan Police, spending much of his career in CID. In 1963, when holding the rank of Detective Sergeant, he was charged with corruption offences and was subsequently found to have been suffering from mental health problems and deemed not to be fit to stand trial. He was sent to a secure hospital, and on his release, he joined the firm of solicitors which had defended him. A public enquiry was held into his actions and why his health problems had not been noticed by his superiors.