Sir William Derrick Capper CStJ QPM (3 January 1912 – 21 March 1977) was an English police officer and the first Chief Constable of West Midlands Police.
Sir William Derrick Capper CStJ QPM (3 January 1912 – 21 March 1977) was an English police officer and the first Chief Constable of West Midlands Police. (en)