A young married physician discovers a mermaid, and gives into her request to be taken to see London. Comedy and romantic entanglements ensue.
Glynis Johns
Miranda Trewella
Googie Withers
Clare Martin
Griffith Jones
Dr. Paul Martin
John McCallum
Nigel
Margaret Rutherford
Nurse Carey
David Tomlinson
Charles
Yvonne Owen
Betty
Sonia Holm
Isobel
Brian Oulton
Manell
Zena Marshall
Secretary
Lyn Evans
Inn Landlord
Stringer Davis
Museum Attendant
Hal Osmond
Railway Carman
Maurice Denham
Cockle Vendor
Gerald Campion
Lift Boy (uncredited)
Howard Douglas
Fisherman (uncredited)
Joan Ingram
Primadonna (uncredited)
Tonie MacMillan
Nigel's Landlady (uncredited)
Charles Paton
On the Kiosk (uncredited)
Philip Ray
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