Jack Gwillim

Jack William Frederick Gwillim (15 December 1909 - 2 July 2001) was a prolific English character actor. Description above from the Wikipedia article Jack Gwillim, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Cast

A Man for All Seasons
Chief Justice

Clash of the Titans
Poseidon

Patton
General Sir Harold Alexander

Jason and the Argonauts
Aeëtes

Cromwell
General Byron

Circus of Horrors
Supt. Andrews

In Search of the Castaways
Captain Grant

The One That Got Away
Commandant, Grizedale

The Curse of the Mummy's Tomb
Sir Giles Dalrymple

The Battle of the River Plate
Captain Parry - H.M.N. Z. S. Achilles

Sink the Bismarck!
Captain Wilfrid Patterson - 'King George V'

Sword of Sherwood Forest
Archbishop Hubert Walter

The Bushbaby
Ardsley

Antony and Cleopatra
Rustic

Battle of Britain
Senior Air Staff Officer

Reason for Living: The Jill Ireland Story
Jill's father

Blue Shark Hash
Jonah

Blind Date
Artist

The Rivals
Rolf Nelson
Number Ten
Admiral Sir Guy Lawrence
Sentenced for Life
John Richards

Kiss the Girls and Make Them Die
British ambassador

Lawrence of Arabia
Club Secretary
Let's Get Married
Dr. Sanders

The Monster Squad
Van Helsing

North West Frontier
Brig. Ames

Thunderball
Senior RAF Staff Officer

Casino Royale
British Officer at Auction

Sammy Going South
District Commissioner

Solomon and Sheba
Josiah

The Inspector
Inspector Cobb

The World Ten Times Over
Bolton

Heart to Heart
Controller of Programmes

No Love for Johnnie
MP (uncredited)

Stranger from Venus
Representative of Parliament (uncredited)