So This Is London (1939 film)

So This Is London is a 1939 British comedy film directed by Thornton Freeland and starring Robertson Hare, Alfred Drayton and George Sanders. It is adapted from the 1922 play So This Is London by Arthur Goodrich which had previously been adapted into a 1930 film. An American clashes with an Englishman over the merits of their respective countries, only to find that their children have fallen in love. It was made at Pinewood Studios by 20th Century Foxs British subsidiary.

Source: Wikipedia