Circe's Rooftop Waterloo

Head up to Mercury House on Waterloo Road and you'll find yourself on a proper London rooftop—the kind where you can actually see the river and the city sprawls out in front of you. Circe's doesn't do the flashy, Instagram-bait thing; it's smarter than that. The cocktails are proper, made by people who know what they're doing, and the crowd's a good mix of Southbank regulars, date-night couples, and mates who've figured out this is where you actually want to be when the sun's going down. It's got that rare thing where it feels sophisticated without being stuffy, busy without being rammed.