London's newest members' clubs redefine exclusivity in 2026

A round-up of Mayfair members' clubs notes that more clubs have opened in the past four years than in the three decades after the Groucho Club launched in 1985. It highlights 2026 arrivals including Selfridges' 40 Duke, Maslow's Kensington and Triplebond inside the BoTree Hotel, while noting traditional clubs like the Hurlingham retain decades-long waiting lists.