Partial filmography
Miracles for Sale (1939) - Dr. Sabbatt (as Frederic Worlock)
Lady of the Tropics (1939) - Colonel Demassey
Balalaika (1939) - Ramensky
The Earl of Chicago (1940) - Lord Elfie (uncredited)
Northwest Passage (1940) - Sir William Johnson (uncredited)
Strange Cargo (1940) - Grideau
The Sea Hawk (1940) - Darnell (uncredited)
He Stayed for Breakfast (1940) - Communist President (uncredited)
South of Suez (1940) - Defense Counsel
Moon Over Burma (1940) - Stephen Harmon
Murder Over New York (1940) - Hugh Drake
Hudson's Bay (1941) - English Governor
Free and Easy (1941) - Manager
Rage in Heaven (1941) - Solicitor-General
Man Hunt (1941) - Lord Gerald Risborough
Dr. Jekyll and Mr. Hyde (1941) - Dr. Heath
Down in San Diego (1941) - Eric Kramer (uncredited)
International Lady (1941) - Sir Henry
A Yank in the R.A.F. (1941) - Canadian Major
How Green Was My Valley (1941) - Dr. Richards
Captains of the Clouds (1942) - President of Court-Martial
Pacific Rendezvous (1942) - Dr. Jackwin
Eagle Squadron (1942) - Grenfall
Pierre of the Plains (1942) - Inspector Cannady
The Black Swan (1942) - Speaker of Assembly (uncredited)
Random Harvest (1942) - Margaret's Lawyer (uncredited)
London Blackout Murders (1943) - Eugene Caldwell
Sherlock Holmes in Washington (1943) - Radio Announcer (uncredited)
Air Raid Wardens (1943) - Otto
The Mantrap (1943) - Patrick Berwick
Thumbs Up (1943) - Kendrick (uncredited)
Appointment in Berlin (1943) - Von Ritter, Ministry of Information (uncredited)
Secret Service in Darkest Africa (1943, Serial) - Sir James Langley [Ch. 15]
Passport to Suez (1943) - Sir Robert Wembley (uncredited)
Sahara (1943) - Radio Newscaster (voice, uncredited)
Sherlock Holmes Faces Death (1943) - Geoffrey Musgrave
Madame Curie (1943) - Businessman (uncredited)
Jane Eyre (1943) - Sam, Waiter at Inn (uncredited)
The Lodger (1944) - Sir Edward Willoughby (uncredited)
Secrets of Scotland Yard (1944) - Mason
Wing and a Prayer (1944) - Admiral (uncredited)
National Velvet (1944) - Stewart (uncredited)
Hangover Square (1945) - Superintendent Clay (uncredited)
The Picture of Dorian Gray (1945) - Francis (uncredited)
The Woman in Green (1945) - Onslow
The Fatal Witness (1945) - Sir Humphrey Mong
Scotland Yard Investigator (1945) - Colonel Brent
Pursuit to Algiers (1945) - Prime Minister
Captain Kidd (1945) - Landers, Newgate Prison Governor (uncredited)
Terror by Night (1946) - Professor William Kilbane
She-Wolf of London (1946) - Constable Ernie Hobbs
Dressed to Kill (1946) - Colonel Cavanaugh
The Locket (1946) - Doctor (uncredited)
The Macomber Affair (1947) - Clerk
The Imperfect Lady (1947) - Henderson
Last of the Redmen (1947) - General Webb (uncredited)
Singapore (1947) - Cadum
Forever Amber (1947) - Actor (uncredited)
The Lone Wolf in London (1947) - Inspector Broome
Love from a Stranger (1947) - Inspector Hobday
A Double Life (1947) - Actor in 'Othello'
A Woman's Vengeance (1948) - Judge (uncredited)
Ruthless (1948) - J. Norton Sims
The Woman in White (1948) - Bernard (uncredited)
Johnny Belinda (1948) - Prosecutor (uncredited)
Joan of Arc (1948) - Duke of Bedford, England's Regent
Hills of Home (1948) - Dr. Weston
A Connecticut Yankee in King Arthur's Court (1949) - Mayor (uncredited)
Alfred Hitchcock Presents (1957) (Season 2 Episode 36: "Father and Son") - Gus Harrison
Alfred Hitchcock Presents (1958) (Season 3 Episode 34: "The Crocodile Case") - Dan Mintz
Alfred Hitchcock Presents (1958) (Season 3 Episode 38: "The Impromptu Murder") - Barclay
Alfred Hitchcock Presents (1959) (Season 4 Episode 21: "Relative Value") - Mr. Betts
Jet Over the Atlantic (1959) - Dean Halltree
Spartacus (1960) - Senator Laelius
One Hundred and One Dalmatians (1961) - Horace / Inspector Craven (voice)
The Notorious Landlady (1962) - Elderly Colonel (uncredited)
The Sword in the Stone (1963) - Additional (voice) (uncredited)
Strange Bedfellows (1965) - Mr. Martindale, Lawyer (uncredited)
Spinout (1966) - Blodgett
Airport (1970) - Frederick Williams, Passenger (uncredited) (final film role)
