Olivia

Olivia Newton-John

Benny

Benny Thomas

Vic

Vic Cooper

Karl

Karl Chambers

John Williams

Roy Dotrice

Suzanne Gilmore

Tracey Crisp

Amy

Imogen Hassall

Johnson

Margaret Nolan

Frank (uncredited)

Richard Ng Yiu-Hon

Alpha

Roy Marsden

Matthew

Carl Rigg

Sylvana

Kubi Chaza

Karl's Friend (uncredited)

Shakira Caine

Bearded Student (uncredited)

Patrick Tull

Music Student (uncredited)

Allan Warren

Jenny (uncredited)

Lynda Westover

Principal (uncredited)

Robert Raglan

Redhead (uncredited)

Rohan McCullough

Music Student (uncredited)

Diane Keen

Concert audience - The Round House (uncredited)

Roy Beck

Stage Door Keeper (uncredited)

Norman Chappell

2nd Policeman (uncredited)

Lindsay Campbell