Ronald Lacey
- Landslide
1992 Fred Donner
- The Assassinator
1992 Stewart
- The Strauss Dynasty
1991 Bauer
- Face to Face
1990 Dr. Brinkman
- TECX
1990
- Valmont
1989 José
- Indiana Jones and the Last Crusade
1989 Gestapo (uncredited)
- Jailbird Rock
1988 Warden Bauman (as Ron Lacey)
- The Great Escape II: The Untold Story
1988 Winston Churchill
- Manifesto
1988 Conductor
- The Sign of Four
1987 Thaddeus und Bartholomew Sholto
- Crossbow
1987
- The Lone Runner
1986 Misha
- Sky Bandits
1986 Fritz
- Aces Go Places IV: You Never Die Twice
1986 The Boss
- Into the Darkness
1986 Andrew Golding
- Unnatural Causes
1986 Eric
- Boon
1986 Emlyn Price Jones
- Flesh + Blood
1985 Cardinal
- Red Sonja
1985 Ikol
- The Ray Bradbury Theater
1985 The Listener
- Connie
1985 Crawder
- The Adventures of Buckaroo Banzai Across the 8th Dimension
1984 President Widmark
- Making the Grade
1984 Nicky
- The Bengal Lancers!
1984 Monsieur Yves
- Sherlock Holmes
1984 Thaddeus & Bartholomew Sholto
- Sahara
1983 Beg
- Yellowbeard
1983 Man with Parrot
- Trenchcoat
1983 Princess Aida
- The Hound of the Baskervilles
1983 Inspector Lestrade
- Blackadder
1983 Bishop of Bath & Wells
- Dramarama
1983 Chris Dexter
- Firefox
1982 Semelovsky
- Aubrey
1982 Leonard Smithers
- Tangiers
1982 Wedderburn
- American Playhouse
1982 Frank Lloyd
- Q.E.D.
1982 Medium
- Raiders of the Lost Ark
1981 Major Arnold Toht
- The Day of the Janitor
1981 Julius
- Bergerac
1981 Joey Brown
- Nijinsky
1980 Leon Bakst
- Magnum, P.I.
1980 Archer Hayes/Picasso/Lowell Xavier Jameson
- Lady Killers
1980 Inspector Bannister
- Cribb
1980 Percy Bustard
- Zulu Dawn
1979 Norris Newman
- Hart to Hart
1979 Inspector Michelot
- Minder
1979 Harry Ridler
- Dylan: The Life and Death of a Poet
1978 Dylan
- Blake's 7
1978 Tynus
- All Creatures Great and Small
1978 Stewie Brannon
- The Mayor of Casterbridge
1978 Joshua Jopp
- Do You Remember?
1978 Mr. Leicester Paton
- Charleston
1977 Frankie
- Target
1977 Charlie Walker
- The Likely Lads
1976 Ernie
- The New Avengers
1976 Hong Kong Harry
- Our Mutual Friend
1976 Mr Venus
- Second Verdict
1976 Marinus Van der Lubbe
- The Duchess of Duke Street
1976 Arthur Shepherd
- The Prince and the Pauper
1976 Lord Rushden
- The Old Curiosity Shop
1975 Harris
- The Next Victim
1975 Bartlett
- The Sweeney
1975 Barry Monk
- Quiller
1975 Dr. Visto
- Shades of Greene
1975 Mike
- Porridge
1974 Harris
- Playhouse
1974 Leonard Smithers
- Churchill's People
1974 Peter of Pomfret
- The Final Programme
1973 Shades
- Gawain and the Green Knight
1973 Oswald
- The Adventures Of Don Quixote
1973 Barber
- Thriller
1973 Bartlett
- Whatever Happened to the Likely Lads?
1973 Ernie
- Last of the Summer Wine
1973 Walter
- Crucible of Terror
1972 Michael Clare
- Disciple Of Death
1972 Parson
- Colditz
1972 Major Zibnek
- The Protectors
1972 Cribbs
- Crown Court
1972 Sgt. Philip Ross
- Macbeth
1971 Macbeths man - killed Banquo (uncredited)
- Jason King
1971 Ryland
- Take a Girl Like You
1970 Graham McClintoch
- Don't Touch Him, He Might Resent It
1970 Mr. Halliday
- The Adventures of Don Quick
1970 Sergeant Sam Czopanser
- Catweazle
1970 Tearful Ted
- Play for Today
1970 Mr. Lang
- Big Brother
1970 Arthur Wicks
- The Sinners
1970 Lipseen
- Otley
1969 Curtis
- Target Generation
1969 Joe Manx
- Department S
1969 Jeremy Standish
- Civilisation
1969 Gravedigger
- W. Somerset Maugham
1969 Controleur
- Mille Miglia
1968 Denis Jenkinson
- Game, Set and Match
1968 The Prisoner
- The Fearless Vampire Killers
1967 Village Idiot
- How I Won the War
1967 Spool
- The Gamblers
1967 Lionel
- Sam and Janet
1967 Flash Harry
- Great Expectations
1967 Orlick
- ITV Playhouse
1967 Mr. Halliday
- Who's a Good Boy Then? I Am!
1966 Billy Oates
- Dead Silence
1966 Len Ferris
- Fable
1965 Len
- Catch Us If You Can
1965 Yeano
- Gideon's Way
1965 Jerry Blake
- BBC Play of the Month
1965 Barber
- Londoners
1965 Arthur
- Out of the Unknown
1965 Joe Manx
- Thirty-Minute Theatre
1965 Frankie Three
- Blackmail
1965 'Beat'
- Of Human Bondage
1964 'Matty' Mathews
- The Comedy Man
1964 Assistant Director
- The Wednesday Play
1964 Billy Oates
- Theatre 625
1964 SS Block Senior
- Thursday Theatre
1964 Private Gross
- Doctor in Distress
1963 Mum's Diner Customer (uncredited)
- Festival
1963 Little Monk
- The Boys
1962 William Henry "Billy" Herne
- The Hard Knock
1962 Trevor Williams
- The Avengers
1961 Strange Young Man
- The Younger Generation
1961 Geoff
- A Chance of Thunder
1961 Johnny Travers
- Armchair Theatre
1956 Valentine
- Hallmark Hall of Fame
1951 Dr. Brinkman
