Peter Williams

Professor Norman Wedgwood

Harold Goldblatt

Dr O'Connell

Gerald Flood

Conway Henderson

Stewart Guidotti

Geoffrey Wedgwood

Gillian Ferguson

Valerie Wedgwood

Richard Dean

Jimmy Wedgwood

Pamela Barney

Professor Mary Meadows

Irene Sutcliffe

Jean Cary

Hugh Evans

Ian Murray

Astor Sklair

John Field

Michael Guest

Michael Kennedy

Guy Verney

Director

Sydney Newman

Producer

Mary Field

Production Consultant