From The Arthur Conan Doyle Encyclopedia
Derek Francis (7 november 1923 - 27 march 1984) was a British actor who played Mycroft Holmes in 1965 in the TV episode The Bruce-Partington Plans of the TV series Sherlock Holmes with Douglas Wilmer (Sherlock Holmes). He also played John Scott Eccles in 1968 in episode Wisteria Lodge of season 2 with Peter Cushing as Sherlock Holmes.
- 1971 : The Case of the Dixon Torpedo (as Dixon)
- 1968 : Wisteria Lodge (as John Scott Eccles)
- 1965 : The Bruce-Partington Plans (as Mycroft Holmes)