Ballets Russes archive footage found in British Pathe archive
An important part of ballet history has been discovered - 30 seconds of the Ballets Russes dancing in 1928.
It is the only film ever found of one of the best known and most influential companies in dance history.
The silent black-and-white news reel was spotted wrongly labelled in the British Pathe online archive by a dance enthusiast, and then verified.
The BBC's Will Gompertz reports.