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Barry Gibb as Prince Frederick, King of Cucumber / Singer |
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Maurice Gibb as Prince Marmaduke, King of Jelly / Singer |
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Lulu as Lulu the cook |
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Spike Milligan as The Court Jester |
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Vincent Price as Wicked Count Voxville |
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Eleanor Bron as Lady Margerie Pee |
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Pat Coombs as Nurse Sarah |
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Eric Clapton as Eric Clapton |
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Ginger Baker as Ginger Baker |
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Steve Winwood as Steve Winwood |
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Ric Grech as Ric Grech |
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Frankie Howerd as Dying King |
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Julian Orchard as Julian the Lord Chamberlaine |
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Roger Daltrey as Roger Daltrey |
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Mick Jagger as Mick Jagger |
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Donovan as Donovan |
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Marianne Faithfull as Marianne Faithfull |
| Directing | Hugh Gladwish | Director |
| Writing | Barry Gibb | Story |
| Writing | Maurice Gibb | Story |
| Production | Maurice Gibb | Associate Producer |
| Production | Robert Stigwood | Executive Producer |
| Production | Mike Mansfield | Producer |
| Production | Barry Gibb | Associate Producer |
| Editing | David Woodward | Editor |
