Billy Hill and Jack ‘Spot’ Comer were infamous figures in London’s criminal underworld until the 1950s. “ONCE UPON A TIME IN LONDON” brings to life the brutal dominance of these two notorious gangsters, portrayed by Leo Gregory and Terry Stone. The film chronicles the epic ascent and decline of their vast criminal empire, which endured until the mid-1950s and set the stage for the infamous Kray Twins and The Richardsons. This is the tale of their rise and eventual downfall.