Joss Ackland
— CS Lewis
Claire Bloom
— Joy Gresham
David Waller
— Warnie Lewis
Rupert Baderman
— Douglas
Rhys Hopkins
— David
Alan MacNaughtan
— Christopher Riley
Philip Stone
— Harry Harrington
Tim Preece
— Alan Gregg
Norman Rutherford
— Paxford
John Ringham
— Doctor
Henry Moxon
— Solicitor
Michael Cunningham
— Registrar
Max Harvey
— Radio Announcer (voice)
Jim Kirby
— Father Fisher
Dilys Price
— Sister
Richard Merrett
— Student