£281.33/mo all-in · £177.33/mo above the Westminster median (£104)
Marylebone, London, W1U 2HU
Visit www.thirdspace.london ↗Prices from the gym's own website, as of 18 August 2026 · How we collect data →
All-in monthly = 12 months of dues plus joining, admin and annual fees, divided by 12. Advertised intro offers are shown but not baked into the all-in figure, because they expire.
| 12 × £273 monthly dues | £3,276 |
| Joining fee | £100 |
| Total, first 12 months | £3,376 |
| All-in monthly | £281.33/mo |
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| Price band | Gyms |
|---|---|
| £36–£50 | 7 |
| £64–£78 | 2 |
| £92–£105 | 3 |
| £105–£119 | 4 |
| £119–£133 | 2 |
| £161–£174 | 1 |
| £230–£244 | 1 |
| £271–£285 | 1 |
| over £285 | 3 |