I loved his appearances on Doctor Who, especially as Chancellor Goth in The Deadly Assassin. I had no idea he was in On Her Majesty's Secret Service. Clearly I need to rewatch that film.
Rest in peace.
He's Campbell - the blonde curly haired guy who puts the safecracker in the crane and later tries to bluff his way up to the Piz Gloria, complaining that Blofeld can't own "the whole bloody Alp!"