|Full name||Derek David Hales|
|Date of birth||15 December 1951|
|Place of birth||Lower Halstow, Kent, England|
|1977–1978||West Ham United||24||(10)|
|* Senior club appearances and goals counted for the domestic league only|
He is the all-time leading goalscorer for Charlton Athletic, with his most prolific season being 1975–76, when he scored 28 league goals and was leading scorer in the Football League Second Division. He is also famous for an on-field fight with teammate Mike Flanagan during an FA Cup tie against Maidstone in 1979. After running a pub in his native village Lower Halstow, he is now employed at the Howard School in Gillingham.
- Roger Triggs (2001). The Men Who Made Gillingham Football Club. Tempus Publishing Ltd. ISBN 0-7524-2243-X.
- Derek Hales at Post War English & Scottish Football League A–Z Player's Database
- Fawbert, Dave (26 April 2019). "The world's most miserable football player profile is absolutely brilliant". Shortlist. Retrieved 7 October 2020.
- Rookwood, Dan (26 October 2001). "It's a knock-out". The Guardian. Retrieved 7 October 2020.
- the-football-league-paper 17 May 2015, issue No.247