Jonathan Penrose, was an English chess player, who held the titles Grandmaster (1993) and International Correspondence Chess Grandmaster (1983). He won the British Chess Championship ten times between 1958 and 1969.

Daniel Abraham (Abe) Yanofsky was a Canadian chess player, chess arbiter, writer, lawyer, and politician. An eight-time Canadian chess champion, Yanofsky was Canada's first grandmaster and the first grandmaster of the British Commonwealth.