La Gamba - Spanish Tapas Bar & Restaurant

You're walking along the Thames on the Southbank, and La Gamba pulls you in with the kind of Spanish energy that makes you forget you're in a festival hall. The bar setup is intimate—standing room with proper high tables—and it's got that lived-in feel of a Madrid bodega rather than a slick London restaurant. The real draw is how seriously they take their cured meats and seafood; the jamón ibérico is properly aged, and the gambas al ajillo won't remind you of every other tapas spot you've been to.