The Rainbow Thief

Plot:

An eccentric prince decides one day to give up all his wealth and position and live his own life. His idea of living his own life, though, is to take up residence in the city's sewers. His dutiful servant, who happens to be a thief, accompanies him. Appeals to his rich uncle to do something about it fall on deaf ears -- the uncle, who prefers the company of his Dalmatians to that of people, is as nutty as he is.

Cast:

Peter O'Toole as Prince Meleagre
Omar Sharif as Dima
Christopher Lee as Uncle Rudolf
Francesco Romano as Marcus rest of cast listed alphabetically:
Jude Alderson as Hortensia
Brigitte Barclay as Rainbow Girl
David Boyce as Clown
Jane Chaplin as Lady Jane
Brian Conway as Ambulance Attendant
Carolyn Cortez as Rainbow Girl
Peter Dennis as Winter
Joanna Dickens as Ambrosia
Berta Domínguez D. as Tiger Lily
Edward Donovan as Rolf
Linzi Drew as Madame Rainbow
Ian Dury as Bartender
Debbie Ferrari as Rainbow Girl
Amanda Jane Forbes as Rainbow Girl
Rachel Garley as Rainbow Girl
Chris Greener as Caesar, the Healer
Kay Hamilton as Miss Fenwick
Brian Hibbard as Madame Claire
Tom Hibbert as Ambulance Attendant
Kirsten Imrie as Rainbow Girl
Stephen Jenn as Michelle
Sheila Keith as Bernadette
Andy McEven as Barker
Declan Mulholland as Pug
Ken Parry as Snow
Ian Ricketts as Casket
Jean-Yves Thual as Col. Heywood (as Jean-Yves Tual)
Marion Turner as Rainbow Girl
Kate Versey as Ambulance Attendant