Sherlock Holmes - The Man who Disappeared (1951) [colourised]

Colourised version of a failed pilot for a proposed British Sherlock Holmes series starring John Longdon (Hitchcock's "Blackmail" and "The Skin Game") as Sherlock Holmes.
Campbell Singer plays Dr Watson and the episode also features Walter Gotell (70s and 80s Bond pictures) as Luzatto.

The story is based on the canonical adventure "The Man With The Twisted Lip".

Source video and description:
https://archive.org/details/SherlockHolmes-TheManWhoDisappearedfailedPilot