David Tomlinson as Basil Topham Petula Clark as Julie Topham Sonja Ziemann as Marta A. E. Matthews as Hillary Topham (Grandpa) Charles Victor as Aubrey Topham Sophie Stewart as Marjorie Topham Philip Stainton as Stanley Grimes Richard Wattis as Hayworth Honeycroft, the Vicar Michael Brennan as Sergeant Marne Alfie Bass as Bert Jenkins Dora Bryan as Ethel Jenkins Ferdy Mayne as István Athene Seyler as Miss Rosabelle Honeycroft (the Vicar's sister) Harold Kasket as The Fat Man George Bishop as The Bishop Margot Lister as Bishop's Wife John Warren as Keeper of the Wheel Ronnie Stevens as TV Announcer Gilbert Davis as TV Gent Stuart Latham as Porter Vernon Morris as Dick Vincent Ball as Man at Party