[4] Capper became disillusioned with university life and, during time of the 1930s depression, decided on a police career.

[5] When interviewed about his new role, Capper stated that although fighting crime was a priority, he also had an interest in road traffic and vowed to tackle challenges in this area of policing.

[7] Capper continued his role as Chief Constable upon the creation of the West Midlands Police on 1 April 1974 after the introduction of the Local Government Act 1972.

[4] Capper was a member of the Freemasons,[14] and keen player of golf, rugby football and athletics sports.

[5] In 1976 he became the first deputy-chairman of the West Midlands Council for Sport and Recreation and at the time of his death he was president of the Shrewsbury Rugby Football Club.