Donald Sumpter
From Tardis Wiki, the free Doctor Who reference
Donald Sumpter (born 13 February 1943[1]) appeared in various Doctor Who television stories: as Enrico Casali in The Wheel in Space, Commander Ridgeway in The Sea Devils, Rassilon in the Doctor Who television story Hell Bent and Erasmus Darkening in The Sarah Jane Adventures television story The Eternity Trap.
Donald debuted in an episode of The Wednesday Play in 1966, after which he appeared on Softly, Softly, Z-Cars, The First Churchills, Barlow at Large, Softly, Softly: Taskforce and Bergerac.