Four-part series using rare, private and commercial film and photographic archives to give poignant and surprising insights into the 1930s, a decade which erupted into colour as polychromatic photographic technology came of age and three important processes - Dufaycolour, Technicolor and Kodachrome - were patented and brought to the market.

This opening part looks at the work of socialite and amateur film-maker, Rosie Newman, who used her high society contacts to secure extraordinary access to the social elite. Between 1928 and her retirement in the 1960s, Newman criss-crossed the globe and shot some of the most important colour documentary footage of the period.

Some of her colour films have been seen before, but this programme features some of Newman's work that has never been broadcast and has not been seen publicly for over 70 years. Show less