Donald Sumpter
From Tardis Wiki, the free Doctor Who reference
Donald Sumpter played Enrico Casali in the Doctor Who television story The Wheel in Space, Commander Ridgeway in the Doctor Who television story 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.
