- Writer:
- David Turner
- Music:
- BBC Radiophonic Workshop
- Designer:
- Stewart Marshall
- Film Cameraman:
- James Balfour
- Film Editor:
- Peter Pierce
- Film sequences directed by:
- Paul Machell
- Producer:
- Joy Harington
- Wilson:
- Anthony Singleton
- Mad Willy:
- Peter Sallis
- First youth:
- Barry Wilsher
- Second youth:
- Richard Cooper
- Roy:
- Bunny May
- Harry:
- Nigel Anthony
- Jennifer:
- Della Walker
- Susan:
- Natasha Pyne
- Twink:
- Derek Williams
- Bugs:
- Roy Holder
- Wally:
- Reginald Smith
- Headmaster:
- Kevin Stoney
- Mr Arthurs:
- John Quentin
- Mr Lions:
- Manning Wilson
- Mrs Dukes:
- Dandy Nichols
- Miss Gibson:
- Margaret Elliot
- Baggy Brown:
- Ian Percy
- Gillian:
- Gay Parsons
- Detective Inspector:
- Michael Guest
