cast(s): Alec Guinness , Beatrice Campbell , Kay Walsh , Grégoire Aslan , Jean Colin , Muriel George , Brian Worth , Esma Cannon , Bernard Lee , Sid James , Campbell Cotts , Moultrie Kelsall , Madam Kirkwood-Hackett , Wilfrid Hyde-White , Eric Maturin , Helen Cherry , Harry Hutchinson , Hal Osmond , Brian Oulton , Ernest Thesiger , Heather Wilde , Ronald Simpson , Arthur Howard , Leslie Weston , Lockwood West , David McCallum Sr. , Meier Tzelniker , John Charlesworth , Alexander Field , Peter Jones , Charles Lloyd Pack ,