Rarely has a film exploded onto cinema screens with such a joyful splash of colour and rhythm as A Colour Box. Made as a commercial for the General Post Office, New Zealand born Len Lye painted directly onto the film strip, synchronising his dynamic shapes and squiggles with an upbeat rumba track. The film captured the heart of audiences on its release in 1935 and continues to do so today.

This government film is a public record, preserved and presented by the BFI National Archive on behalf of The National Archives, home to more than 1,000 years of British history.