- Writer:
- Alan Seymour
- Music composed by:
- Stanley Myers
- Title Music:
- Paul Jones
- Arranged by:
- Mike Vickers
- Designer:
- Natasha Kroll
- Producer:
- James MacTaggart
- Director:
- Peter Duguid
- Sir John Rampayne:
- Jack Hawkins
- Dr. Scott-Studley:
- Sheila Ballantine
- Reporter:
- Richard Coe
- Derrick Tandem:
- John Line
- Airline Clerk:
- Alan Mason
- Chief Superintendent James:
- Morris Perry
- Boland:
- Rex Robinson
- Sir John Rampayne:
- Jack Hawkins
- Wolf:
- Ian McKellen
- Denzil Trafford:
- Robert James
- Roland Sloane:
- Meredith Edwards
- March:
- Milton Johns
- Manao:
- Harry Baird
- Louise:
- Myrtle Reed
- Guitar player:
- Ian Hamilton
- First student:
- Bill Lyons
- Second student:
- Paul Rober
- Eleanor Brinson:
- Faith Brook
- Lady Rampayne:
- Mary Hinton
- Rosine:
- Marigold Russell
- Sir John as a Boy:
- Rufus Frampton
- His father:
- Kenneth Benda
- Nanny:
- Dorothea Phillips
- Fagmaster:
- Nicholas Young
- Sir John as a Young Man:
- Tim Hardy
- Dita:
- Penelope Lee
- Nancy:
- Dorothy Primrose
- The Great Man:
- George Curzon
- BBC journalist:
- Richard Kay