The Chelsea Drugstore

You'll spot the neon sign from halfway down South Great George's Street, which is handy because the entrance is more subtle than you'd expect for a place with this much personality. Inside, it's all dark wood, vintage pharmacy fittings, and the kind of dim lighting that makes everyone look better after 9pm on a Thursday. The cocktail menu reads like someone actually thinks about flavour combinations rather than just throwing trendy ingredients together. Their take on classics is spot-on without being showy about it, and the staff know their way around a shaker. Weekend evenings get properly busy with a crowd that's more interested in decent drinks than Instagram opportunities, though you'll still get your fair share of both.