Jack MacGowran

Prof. Oscar Collins

Jane Birkin

Penny Lane

Irene Handl

Mrs. Peurofoy

Richard Wattis

Perkins

Iain Quarrier

Young Man

Beatrix Lehmann

Mother

Brian Walsh

Photographer

Sean Lynch

Riley

Bee Duffell

Mrs. Charmer

Noel Trevarthen

Policeman

Anita Pallenberg

Girl at Party (uncredited)

Suki Potier

Girl at Party (uncredited)

Joe Massot