(1974) Frankenstein: The True Story

as Dr. Clervall

(1965) The Greatest Story Ever Told

as Judas Iskarioth

(1958) A Night to Remember

as Assistant Wireless Operator Harold Bride

(1962) Billy Budd

as Steven Wyatt, Gunnery Officer

(1963) The Great Escape

as Ashley-Pitt 'Dispersal'

(1980) The Watcher in the Woods

as Paul Curtis

(1986) The Wind

as John

(1967) The Karate Killers

as Illya Kuryakin

(1969) Mosquito Squadron

as Quint Monroe

(1965) The Spy with My Face

as Illya Kuryakin

(1968) How to Steal the World

as Illya Kuryakin

(1967) Three Bites of the Apple

as Stanley Thrumm

(1964) To Trap a Spy

as Illya Kuryakin

(1966) Around the World Under the Sea

as Dr. Philip Volker

(2008) Batman: Gotham Knight

as Alfred Pennyworth (voice)

(1962) Freud: The Secret Passion

as Carl von Schlossen

(1990) The Haunting of Morella

as Gideon Locke

(2009) Wonder Woman

as Zeus (voice)

(1957) Hell Drivers

as Jimmy Yately, Tom's brother

(1961) The Long and the Short and the Tall

as Pvt. Sammy Whitaker

(1984) Master Ninja II

as Castile

(1993) Dirty Weekend

as Reggie

(1991) Hear My Song

as Jim Abbott

(1960) Jungle Street

as Terry Collins

(1958) Violent Playground

as Johnnie Murphy

(1983) The Return of the Man from U.N.C.L.E.: The Fifteen Years Later Affair

as Illya Kuryakin

(1966) One Spy Too Many

as Illya Kuryakin

(1968) The Helicopter Spies

as Illya Kuryakin

(1976) Dogs

as Harlan Thompson

(1965) The Big T.N.T. Show

as Self - Host

(1967) The Spy in the Green Hat

as Illya Kuryakin

(1966) One of Our Spies Is Missing

as Illya Kuryakin

(1968) Sol Madrid

as Sol Madrid

(1994) Ancient Prophecies II: Countdown to Doomsday

as Self

(1969) The File on Devlin

as Kenneth Canfield

(1957) The Secret Place

as Mike Wilson

(1994) Ancient Prophecies

as Self

Ancient Prophecies III: New Visions of the Future

as Self

(1975) The Kingfisher Caper

as Benedict Van Der Byl

(2014) Son of Batman

as Alfred Pennyworth (voice)

(1996) Death Game

as Malius

(1985) Terminal Choice

as Dr. Giles Dodson

(1969) Teacher, Teacher

as Hamilton Cade

(1969) The Ravine

as Sergeant Stephen Holmann

(1964) The Unknown

as Tone Hobart

(1989) The Return of Sam McCloud

as Inspector Craig

(1970) Hauser's Memory

as Hillel Mondoro

(1988) The Man Who Lived at the Ritz

as Charlie Ritz

(1959) The Skin of Our Teeth

as Henry

(2015) Batman vs. Robin

as Alfred Pennyworth (voice)

(1999) Cherry

as Mammy

(1972) She Waits

as Mark Wilson

(2002) Swindle

as Eddie

(1999) Television: The First Fifty Years

as Illya Kuryakin (archive footage)

(1998) March in Windy City

as Daniel Paterson / Dimitri Petrovsky

(2024) NCISverse: The First 1,000

as Self

(1957) Ill Met by Moonlight

as Sailor on Pick Up Ship (uncredited bit)

(1984) The Corvini Inheritance

as Frank Lane

(1994) Titanic: The Complete Story

as Narrator (voice)

(1991) Fatal Inheritance

as Brandon Murphy

(1957) Robbery Under Arms

as Jim Marston

(1973) The Screaming Skull

as Luke

(1961) Caroline of Rijeka

as Mr. George

(1979) King Solomon's Treasure

as Sir Henry Curtis

(1985) 92 Grosvenor Street

as ---

(2006) Doctor Who: Origins

as Self (archive footage)

(1973) The Six Million Dollar Man: Wine, Women and War

as Alexi Kaslov

(1993) Return to 'The Great Escape'

as Self

(1962) Wuthering Heights

as Edgar

(1957) These Dangerous Years

as ---

(1975) The Invisible Man

as Dr. Daniel Westin

(1967) Italy's in Season

as Self

(2020) Charles Bronson: The Spirit of Masculinity

as Self (archive footage)

(1988) Wall of Tyranny

as Sgt. Kemper

(1967) Casino Royale

as Casino Patron (uncredited)

(1999) The Titanic Chronicles

as Host

(1998) Beyond Titanic

as Self

(1984) Murder, She Wrote

as Cyril Grantham

(1963) The Great Adventure

as Capt. Hanning

(1964) The Man from U.N.C.L.E.

as Illya Kuryakin

(1972) Colditz

as Flt. Lt. Simon Carter

(2006) The One Show

as Self

(1986) Matlock

as Philip Dudley

(1993) seaQuest DSV

as Frank Cobb

(1995) VR.5

as Dr. Joseph Bloom

(1979) Sapphire & Steel

as Steel

(2000) Deadline

as ---

(1985) The New Alfred Hitchcock Presents

as Lieutenant Cavanaugh

(1992) Heartbeat

as Cooper

(1994) Babylon 5

as Dr. Vance Hendricks

(1973) Frankenstein: The True Story

as Dr. Henri Clerval

(1979) Hart to Hart

as Geoffrey Atterton

(1957) Perry Mason

as Phillipe Bertain

(1988) Monsters

as The Feverman

(2003) NCIS

as Dr. Donald 'Ducky' Mallard

(2006) The Replacements

as C.A.R. (voice)

(1995) JAG

as Donald Mallard

(1951) Hallmark Hall of Fame

as Hamilton Cade

(1975) The Invisible Man

as Dr. Daniel Westin

(1964) Profiles in Courage

as John Adams

(2014) NCIS: New Orleans

as Donald Mallard

(1961) Sir Francis Drake

as Lord Oakeshott

(1984) Hammer House of Mystery and Suspense

as Frank Lane

(1989) Mother Love

as Alex Vesey

(1984) Murder, She Wrote

as Drew Garrison

(1995) The Outer Limits

as Joshua Hayward

(1963) The Outer Limits

as Gwyllm Griffiths

(2011) The Problem Solverz

as ---

(1979) Kidnapped

as Alan Breck Stewart

(2010) Ben 10: Ultimate Alien

as Professor Paradox (voice)

(1990) Lucky Chances

as Bernard Dimes

(1970) Night Gallery

as Dr. Joel Winter

(1958) Our Mutual Friend

as Eugene Wrayburn

(1998) Sex and the City

as Duncan

(1963) The Outer Limits

as Tone Hobart

(1994) Titanic

as Narrator

(1989) Father Dowling Mysteries

as Sir Robert

(1969) Marcus Welby, M.D.

as Brian Kenny

(1965) Please Don't Eat the Daisies

as Illya Kuryakin

(1961) The Mike Douglas Show

as Self

(1962) The Tonight Show Starring Johnny Carson

as Self

(1956) Armchair Theatre

as Narrator

(1956) Armchair Theatre

as Jimmy MacGrath

(1982) Wogan

as Self

(1990) Law & Order

as Craig Holland

(2001) The Education of Max Bickford

as ---

(1951) Hallmark Hall of Fame

as Kenneth Canfield

(1983) The A-Team

as Ivan Tregorin

(1998) Coming Home

as Billy Fawcett

(1964) Vergißmeinnicht

as Self

(1990) Cluedo

as Professor Plum

(1960) Emma

as Frank Churchill

(2008) Batman: The Brave and the Bold

as Merlin (voice)