Donovan
The Pied Piper
Diana Dors
Frau Poppendick
Donald Pleasence
The Baron
Roy Kinnear
Burgermeister Poppendick
John Hurt
Franz
Michael Hordern
Melius, Alchemist
Jack Wild
Gavin
Peter Vaughan
Bishop
Keith Buckley
Mattio
Cathryn Harrison
Lisa
Peter Eyre
Pilgrim
David Leland
Officer
Patsy Puttnam
Helga
Arthur Hewlett
Otto
P
Paul Hennen
Karl
M
Michael Goldie
Burger
André van Gyseghem
Friar
J
John Falconer
Priest
C
Clive Elliot
Priest
S
Sammie Winmill
Gretel
John Welsh
Chancellor
David Nettheim
Kulik (as David Netheim)
Gertan Klauber
Town Cryer
Hamilton Dyce
Papal Nuncio
Roger Hammond
Burger
E
Edwin Brown
Burger
G
George Cormack
Burger
M
Mary MacLeod
Maidservant (as Mary McLeod)
H
Harry Fielder
Flunky (uncredited)
S
Sacha Puttnam
Little Boy (uncredited)
F
Fred Wood
Burger (uncredited)