From The Arthur Conan Doyle Encyclopedia
Margaret John (14 december 1926 - 2 february 2011) was a Welsh actress who played Mrs. Hudson in the 2 TV movies with Christopher Lee as Sherlock Holmes : Sherlock Holmes and the Leading Lady (1991) and Incident at Victoria Falls (1992).
- 1992 : Incident at Victoria Falls (as Mrs. Hudson)
- 1991 : Sherlock Holmes and the Leading Lady (as Mrs. Hudson)
and also in The Rivals of Sherlock Holmes:
- 1973 : The Superfluous Finger (as Receptionist)