When a local photgrapher stumbled upon 1,000s of David Granick's colour slides in early 2017, he knew he had struck gold.These images capture the post-war streets of Stepney, Whitechapel, Bow and beyond in the warmth of Kodachrome hues at a time when black and white photgraphy was the norm.Left untouched on a library shelf for 37 years, and revealed now for the first time, these photographs show an East London on the cusp of social transition.