Big Business is a 1934 British comedy film directed by Cyril Gardner and starring Claude Hulbert, Eve Gray and Ernest Sefton. It was made at Teddington Studios as a quota quickie by the British subsidiary of Warner Brothers. It is notably the second film of the same name that James Finlayson starred in.
Two sets of twins are mixed up at birth, leading to an identity crisis at the Plaza Hotel later in life.