Why Third Space works

Third Space opened its first club on Brewer Street in Soho in 2001 and has grown to fourteen London sites, all of them in London and none anywhere else. Backed by KSL Capital since 2021, it has spent the last few years pushing out of the centre into residential areas — Wimbledon, Clapham Junction, Richmond — after two decades of serving only the City and West End.

The comparison that matters

Third Space's real competitor is Equinox, and the comparison is unflattering for Equinox. Third Space charges roughly £257 a month for a single club, or a group membership covering most of the estate. Equinox asks around £297 in Kensington and up to £470 at St James's.

For that lower price, Third Space clubs have swimming pools. No Equinox in London does. They also have more of them — fourteen sites against three — which means a far better chance of one being near you.

Fourteen clubs with pools, for less than three clubs without.

Scale and individuality

The clubs are deliberately not identical. Canary Wharf runs to over 100,000 square feet; Marylebone is around 14,000 with an 18-metre pool. Soho, the original, retains the oddities that made the brand — a hypoxic altitude chamber and a climbing wall of roughly 75 square metres, neither of which appears anywhere else in the group.

Mayfair goes the other way into restraint: Eleiko strength platforms, Reformer Pilates, a Himalayan salt-walled sauna, UV-treated air. Moorgate is built around recovery, with a combat zone and a dedicated recovery lounge.

The pricing you should actually ask about

The published rates are not what many members pay. Corporate partnerships are widespread among City and West End employers in finance, law, advertising and tech, and reported effective rates through those schemes fall considerably below list. If you work for a large employer in central London, ask before joining directly — it is the single highest-value question in this article.

Note also that group membership excludes Mayfair and Chelsea, which sit on separate higher tiers, and that a joining fee of around £100 applies.

The honest counterweight

Popular clubs run waitlists, and access dates get staggered on joining rather than starting immediately — a genuine irritation if you want to train this week. Prices have also been rising: group membership was announced to move to £299 for new joiners from September 2026.

And the estate skews heavily to central and south-west London. If you live in north-east London the nearest club may be a commute, at which point a Nuffield with a pool at a third of the price starts looking sensible.

Who it suits

People who want a genuinely premium club with wet facilities and are not prepared to pay Equinox rates for less, and particularly anyone whose employer subsidises it. For everyone else the mid-market has narrowed the gap considerably.

Prices and locations change. Figures reflect publicly reported rates in 2026 — confirm with the operator before joining. We have no commercial relationship with any operator listed on this site.