Credits

• 1986 · Ladies' Night as Monks
• 1986 · Unnatural Causes as Monks
• 1986 · Worlds Beyond as Clifford Barrington
• 1986 · Theban Plays: Oedipus the King as Chorus
• 1986 · Blood Hunt as The Rev. Davidson
• 1985 · Young Sherlock Holmes as Rupert T. Waxflatter
• 1985 · Screen Two as The Rev. Davidson
• 1985 · The Pickwick Papers as Mr. Pickwick
• 1983 · Yellowbeard as Admiral
• 1983 · Red Monarch as Molotov
• 1982 · The Barretts of Wimpole Street as Dr. Chambers
• 1982 · Doctor Who: Time-Flight as Professor Hayter
• 1981 · Winston Churchill: The Wilderness Years as Admiral Domvile
• 1981 · The Union as Harry Pollitt
• 1981 · Dear Brutus as Coade
• 1981 · Triangle as Wally James
• 1980 · A Tale of Two Cities as Jarvis Lorry
• 1980 · Yes Minister as
• 1980 · The Mirror Crack'd as Inspector Gates ("Murder at Midnight")
• 1979 · Tinker Tailor Soldier Spy as Roddy Martindale
• 1979 · A Man Called Intrepid as Winston Churchill
• 1978 · Strangers as The Mayor
• 1977 · Six Characters in Search of an Author as The Father
• 1977 · When I'm Rich as (voice)
• 1975 · Operation: Daybreak as General
• 1975 · Quiller as Loman
• 1975 · Russian Roulette as Captain Ferguson
• 1974 · Churchill's People as Earl Howe
• 1974 · Is It Something I Said? as Wallace
• 1974 · Fall of Eagles as General Alexiev
• 1973 · Centre Play as Wallace
• 1973 · Bequest to the Nation as George Matcham
• 1972 · Colditz as Gestapo Officer One
• 1972 · Van der Valk as Hoofd-commissaris Samson
• 1972 · No Exit as Lt. Col. Napier
• 1970 · I Can't See My Little Willie as Arthur Palmer
• 1970 · Hamlet as The First Player
• 1970 · Play for Today as Arthur Palmer
• 1970 · Play for Today as Coade
• 1970 · Cromwell as Sir Edward Hyde
• 1970 · The Others as Robert Williams
• 1970 · Doomwatch as Commander Charles Keeping
• 1969 · Softly Softly: Task Force as Dr. Tadman
• 1969 · The Doctors as Dr. Thomas Owens
• 1969 · The Main Chance as George Fisher
• 1968 · The Lion in Winter as William Marshall
• 1968 · The Expert as General Sir Charles Lamborbey
• 1968 · The Lost Continent as Dr. Webster
• 1967 · The Prisoner as The Colonel / Number Six / Seltzman
• 1967 · The Night of the Generals as Otto
• 1966 · Second Childhood as Charles Dennistoun
• 1965 · BBC Play of the Month as Col. Vladimir Petrov
• 1965 · BBC Play of the Month as Max Harkaway
• 1965 · Out of the Unknown as Charles Dennistoun
• 1965 · The Troubleshooters as Arthur Rogers
• 1965 · The Troubleshooters as Herr Schlilling
• 1964 · Weekend at Dunkirk as Un soldat brûlé
• 1964 · The Big Breaker as Elvet
• 1964 · The High Bright Sun as Colonel Park
• 1964 · The Wednesday Play as Elvet
• 1964 · The Wednesday Play as Dennis
• 1964 · Sherlock Holmes as Dr. Watson
• 1964 · Theatre 625 as Gerald
• 1964 · The Life of Galileo as Narrator / Sagredo / Cardinal Bellarmin / Pamphleteer / Peasant
• 1964 · Nothing But the Best as Ferris
• 1963 · Doctor Who as Professor Hayter
• 1963 · Festival as Narrator - Sagredo - Cardinal Bellarmin - Pamphleteer - Peasant
• 1963 · Espionage as Harry Forbes
• 1963 · The Great Escape as Cavendish 'The Surveyor'
• 1963 · To Have and to Hold as George Matthews
• 1963 · Lorna Doone as
• 1962 · The Saint as Jim Chase
• 1962 · Out of This World as Dr John Frame
• 1962 · The Password Is Courage as Cole
• 1962 · The Winter's Tale as Camilio
• 1962 · H.M.S. Defiant as Senior Midshipman Kilpatrick
• 1961 · Where the Difference Begins as Edgar
• 1961 · Victim as Phip
• 1961 · The Avengers as
• 1960 · Who Pays the Piper? as
• 1960 · Never Let Go as Regan
• 1959 · No Hiding Place as
• 1958 · The Caine Mutiny Court-Martial as
• 1958 · The Silent Enemy as Able Seaman Fraser
• 1957 · Overseas Press Club - Exclusive! as Olaf
• 1957 · Theatre Night as Gene Grierson
• 1956 · The Battle of the River Plate as Chief Officer, Tairoa, Prisoner on Admiral Graf Spee
• 1956 · Eyewitness as Barney
• 1956 · Armchair Theatre as Walter Daymer
• 1956 · Armchair Theatre as Martin
• 1956 · Armchair Theatre as Mr. Blessington
• 1956 · Armchair Theatre as Charles Drummond
• 1956 · Armchair Theatre as Robert Williams
• 1955 · The Dam Busters as Flying / Off. F. M. Spafford, D.F.C., D.F.M.
• 1955 · The Night My Number Came Up as The Pilot
• 1954 · Aunt Clara as Charles Willis
• 1953 · Malta Story as Giuseppe Gonzar
• 1952 · Derby Day as Jim Molloy
• 1951 · Hallmark Hall of Fame as First player
• 1951 · The Lady with a Lamp as George Winch
• 1948 · Brighton Rock as Cubitt
• 1947 · It Always Rains on Sunday as Ted Edwards
• 1947 · Rope as
• 1939 · Sons of the Sea as Rudd
• 1939 · Goodbye, Mr. Chips as John Forrester (uncredited)
• 1938 · Luck of the Navy as
• 1938 · Lancashire Luck as Joe Lovejoy
• 1937 · Vice Versa as Mr. Paul Bultitude