Triplebond

A social wellness members' club that opened in August 2026 across several floors of The BoTree, on the corner where Marylebone runs into Mayfair. It sells itself on three things happening in one building: activation, restoration and company. The last of those is the point. Most of London's longevity clubs are places to be alone efficiently, and this one is built around lounges and a members' calendar as much as around the equipment.

The recovery floor runs an infrared sauna and a cold plunge, an electric cryotherapy chamber, a red-light bed, a lymphatic lounge given over to compression therapy, and a longevity floor for diagnostics and testing. There is a gym, a hot studio, and above all of it Marylebone's first rooftop pool, on a deck with its own terraces and bar. Membership is tiered, and one of the three tiers buys the social floors and the events calendar without the gym at all.

For a private occasion the interest is the rooftop and the lounges rather than the treatment rooms, and access runs through membership rather than a published hire product. The hotel underneath handles its own events separately.