Sketch is in Mayfair rather than Chelsea, but that's not stopping it joining in the celebrations – this year, it's holding its own Mayfair Flower Show, with five exhibitors setting up bloom-filled installations from 17 to 29 May. The blossom theme will spill over into the two Michelin-starred Lecture Room & Library, where Pierre Gagnaire has created a floral-inspired lunch menu complemented by a champagne tasting with Champagne Pommery. There'll be a special afternoon tea, too, curated by Sketch's bar manager, who's also known as The Dame of Roses – fitting, as it'll be held in the Pommery Lounge, which will be transformed into an enchanted forest for the occasion.