Almost self-consciously determined not to be a heartwarming hark back to late 60s London (there is far too much swearing and aggressive chat), "Gangster No 1" nonetheless dazzles with its fully-written characters, its determined stylishness (which always relates to characters and story) and Johnny Dankworth's best soundtrack in years. All about a vicious hard-nut (played in the past by Paul Bettany, and in the present by Malcolm McDowell) who desired the empire of his boss (David Thewlis) for himself, the film offers a platform to three electric actors, with Bettany putting on the best show of all. Not for those who regard England as a nice cup of tea.