James Aubrey as Ralph

Tom Chapin as Jack

Hugh Edwards as Piggy

Roger Elwin as Roger

Tom Gaman as Simon

Roger Allan as Piers

David Brunjes as Donald

Peter Davy as Peter

Kent Fletcher as Percival Wemys Madison

Nicholas Hammond as Robert

Christopher Harris as Bill

Alan Heaps as Neville

Jonathan Heaps as Howard

Burnes Hollyman as Douglas

Andrew Horne as Matthew

Richard Horne as Lance

Timothy Horne as Leslie

Peter Ksiezopolski as Francis

Anthony McCall-Judson as Maurice

Malcolm Rodker as Harold

David St. Clair as George

Rene Sanfiorenzo Jr. as Charles

Jeremy Scuse as Rowland

John Stableford as Digby

David Surtees as Sam

Simon Surtees as Eric

Nicholas Valkenburg as Rupert

Patrick Valkenburg as Robin

Edward Valencia as Frederick

John Walsh as Michael

David Walsh as Percy

Jeremy Willis as Henry

Toby Robertson as Naval Officer (uncredited)