In 1927 Claude Friese-Greene shot some of the first-ever color film footage around London. He captured everyday life in the city with a technique innovated by his father, called Biocolour. I particularly liked the buses and the scenes of people in Petticoat Lane.
I've embedded the video below, for ease of access, but my thanks to the British Film Institute for publishing it and the deathandtaxes website for drawing it to people's attention.
Be warned that there is music with it, which gets progressively louder. I muted my volume control.