? Doctor Who: The Power of the DaleksLesterson 1956 Around the World in 80 DaysExtra (uncredited) 1957 When We Are MarriedThe Rev. Clement Mercer 1959 The Bridal PathInspector 1965 Thirteen to Centaurus 1966 The Last Invasion 1971 Mary, Queen of ScotsJohn Knox 1971 OrkneySpence 1974 Captain Kronos – Vampire HunterPointer 1976 Doctor Who: The Masque of MandragoraHigh Priest 1984 And the Wall Came Tumbling DownFather Ambrey / Packard 1984 John Wycliffe: The Morning StarBishop Courtenay 1993 Soft Top Hard ShoulderCampbell 1995 Cold Comfort Farm