Basil Dearden Director Will Hay William Potts, Muller Director, Actor Frank Pettingell Professor Hoffman Actor Julien Mitchell Gen. von Glotz Actor Raymond Lovell Schmidt Actor Charles Hawtrey Max Actor Barry Morse Kurt Actor Peter Croft Hans Actor Anne Firth Lena Actor Aubrey Mallalieu Rector Actor Peter Ustinov Krauss Actor Leslie Harcourt Col. Truscott Actor