Derrick Capper
Sir William Derrick Capper  | |
|---|---|
| Born | 3 January 1912 | 
| Died | 21 March 1977 (aged 65) Shrewsbury, Shropshire  | 
| Nationality | British | 
| Occupation | Chief constable | 
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.