| |
| Film credits |
| |
| GET YOUR MAN | 1934 | Tom Jakes |
| LEAVE IT TO BLANCHE / FEBRUARY 29TH | 1934 | Ronnie |
| ALL AT SEA | 1935 | Aubrey Bellingham |
| MEN ARE NOT GODS / TRIANGLE | 1936 | Tommy Stapleton |
| STORM IN A TEACUP | 1937 | Frank Burdon |
| SCHOOL FOR HUSBANDS | 1937 | Leonard Drummond |
| THE CITADEL | 1938 | Dr. Lawford |
| ST. MARTIN'S LANE W.C.2 / SIDEWALKS OF LONDON | 1938 | Harley Prentiss |
| OVER THE MOON | 1939 | Dr. Freddie Jarvis |
| THE SILENT BATTLE / CONTINENTAL EXPRESS / PEACE IN OUR TIME | 1939 | Jacques Sauvin |
| TEN DAYS IN PARIS / THE MISSING TEN DAYS | 1939 | Robert Stevens |
| NIGHT TRAIN TO MUNICH / NIGHT TRAIN / GESTAPO | 1940 | Dickie Randall/'Gus Bennett' |
| MAJOR BARBARA | 1941 | Adolphus Cusins |
| BLITHE SPIRIT | 1945 | Charles Condomine |
| THE RAKE'S PROGRESS / THE NOTORIOUS GENTLEMAN | 1945 | Vivian Kenway |
| I LIVE IN GROSVENOR SQUARE / A YANK IN LONDON | 1945 | Major David Bruce |
| ANNA AND THE KING OF SIAM | US, 1946 | the King |
| THE GHOST AND MRS. MUIR | 1947 | Captain Daniel Glegg |
| THE FOXES OF HARROW | US, 1947 | Stephen Fox |
| UNFAITHFULLY YOURS - | US, 1948 | Sir Alfred de Carter |
| ESCAPE | 1948 | Matthew 'Matt' Denant |
| THE LONG DARK HALL | US, 1951 | Arthur Groome |
| THE FOURPOSTER | US, 1952 | John |
| MAIN STREET TO BROADWAY | US, 1953 | himself |
| KING RICHARD AND THE CRUSADERS | US, 1954 | Sultan Saladin |
| THE CONSTANT HUSBAND / MARRIAGE A LA MODE | 1954 | a man who has lost his memory |
| THIS IS LONDON | 1956 | commentator |
| THE RELUCTANT DEBUTANTE | US, 1958 | Jimmy Broadbent |
| MIDNIGHT LACE | US, 1960 | Tony Preston |
| THE HAPPY THIEVES / THE OLDEST CONFESSION / ULTIMO CHANTAJE / ONCE A THIEF | US/W. Germany/Spain, 1961 | Jim Bourne |
| CLEOPATRA | UK/US, 1963 | Julius Caesar |
| THE YELLOW ROLLS-ROYCE | 1964 | Marquess of Frinton |
| MY FAIR LADY | US, 1964 | Professor Henry Higgins |
| THE AGONY AND THE ECSTASY | 1965 | Pope Julius II |
| THE HONEY POT / ANYONE FOR VENICE? / THE MASQUERADE | US/Italy, 1966 | Cecil Fox |
| DOCTOR DOLITTLE | US, 1967 | Doctor John Dolittle |
| A FLEA IN HER EAR / UNE PUCE A L'OREILLE | US/France, 1968 | Victor Chandebisse / Poche |
| STAIRCASE | US, 1969 | Charlie |
| THE PRINCE AND THE PAUPER / THE CROSSED SWORDS | Panama, 1977 | Norfolk |
| THE FIFTH MUSKETEER / THE MAN IN THE IRON MASK / BEHIND THE IRON MASK / DAS GEHEIMNIS DER EISERNEN MASKE | Austria/UK, 1977 | Colbert |
| SHALIMAR / SCHALIMAR / THE RAIDER OF THE SACRED STONE / THE DEADLY THIEF | India/US, 1978 | Sir John Locksley |
| ANCIENT MODERNS: GREEK ISLAND ART AND CULTURE 3000-2000 B.C. | US, 1979 | commentator |
| ASHANTI | Switzerland, 1979 | Brian Walker |
| TITANIC IN A TUB: THE GOLDEN AGE OF TOY BOATS | US, 1982 | narrator |
| A TIME TO DIE / SEVEN GRAVES FOR ROGAN / REVENGE / MARIO PUZO'S SEVEN GRAVES FOR ROGAN | US, 1983 | Klaus von Osten |
| CALLOW'S LAUGHTON | Channel 4 tx 30/8/1987 | interviewee |
| HEARTBREAK HOUSE / GREAT PERFORMANCES: Heartbreak House | PBS (US) 1989; Channel 4 tx 27/12/1989 | Captain Shotover |
| ANASTASIA: THE MYSTERY OF ANNA | NBC (US) tx 7 & 8/12/1986 | Grand Duke Cyril Romanov |
| |
| Television credits |
| |
| VILLA FOR SALE | BBC tx 10/11/1938 | cast member |
| YOUR SHOW OF SHOWS | NBC (US) tx 11/3/1950 | guest |
| THE COLGATE COMEDY HOUR | NBC (US) tx 18/3/1951 | guest |
| THE COLGATE COMEDY HOUR | NBC (US) tx 8/4/1951 | guest |
| OMNIBUS: The Trial of Anne Boleyn | CBS (US) tx 9/11/1952 | Henry VIII |
| THE UNITED STATES STEEL HOUR: The Man in Possession | ABC (US) tx 8/12/1953 | Raymond Dabney |
| DUPONT SHOW OF THE MONTH: Crescendo | CBS (US) tx 29/9/1957 | Englishman |
| THE METHOD: AN ITV SPECIAL INVESTIGATION | ITV tx 26/6/1958 | on-screen participant |
| THE FABULOUS FIFTIES | NBC (US) tx 31/1/1960 | performer |
| THE DOW HOUR OF GREAT MYSTERIES: The Datchet Diamonds | NBC (US) tx 20/9/1960 | Cyril Paxman |
| THIS IS YOUR LIFE: Zena Dare | BBC tx 26/3/1963 | on-screen participant |
| GOLDEN DRAMA | ITV tx 31/1/1965 | cast member |
| REX HARRISON AT THE NFT | BBC2 tx 14/5/1971 | interviewee |
| BURT BACHARACH - CLOSE TO YOU | ITV tx 29/7/1972 | performer |
| PLAY OF THE MONTH: The Adventures of Don Quixote | BBC1 tx 7/1/1973 | Don Quixote |
| PLAY OF THE MONTH: Platonov | BBC1 tx 23/5/1973 | Mikhail Platonov, schoolmaster |
| SHORT STORIES OF LOVE / THREE FACES OF LOVE | NBC (US) tx 1/5/1974 | presenter |
| REX | BBC1 tx 15/11/1974 | interviewee |
| THE WEDNESDAY SPECIAL: The Evening Standard Drama Awards | ITV tx 4/2/1976 | presenter |
| BOB HOPE, 25 YEARS IN TELEVISION | BBC1 tx 17/3/1976 | on-screen participant |
| THE SATURDAY SPECIAL: The Edinburgh Festival | ITV tx 24/9/1977 | on-screen participant |
| TERENCE RATTIGAN, A TRIBUTE | BBC1 tx 2/12/1977 | interviewee |
| MAINSTREAM | BBC1 tx 9/10/1979 | guest |
| SUNDAY SUNDAY | ITV tx 19/12/1982 | guest |
| THE KINGFISHER | ITV tx 23/12/1982 | Sir Cecil |
| A DAMNED SERIOUS BUSINESS | ITV tx 2/12/1987 | interviewee |
| FILM 90 | BBC1 tx 5/6/1990 | tribute to |
