There's no single, authoritative count of London's bars—and for good reason. The number fluctuates constantly as venues open, close, rebrand, or shift between categories (pubs, cocktail bars, wine bars, nightclubs, hotel bars, pop-ups). Licensing data from local councils captures "premises licenses" for alcohol sales, but that includes restaurants, supermarkets, and off-licenses, not just bars.
Seasonal pop-ups, temporary event licenses, and the blurry line between "bar" and "restaurant with a great cocktail program" make any fixed number misleading. For practical purposes: London has thousands of bars, concentrated in Soho, Shoreditch, Camden, Clapham, and the City, with new ones appearing weekly.