Sir Richard Attenborough (General Charles Whiteley) and Gerald Sim (Dr. Griffiths) were brothers-in-law in real-life. Attenborough was married to Sim's elder sister Sheila Sim from 1945 until his death in 2014.
Sir Richard Attenborough (General Charles Whiteley) directed John Thaw (Terry Mitchell) in Cry Freedom (1987) and Chaplin (1992).
The working Title was Grigsby.