Arc

If you don’t mind sharing your sauna with a lot of other people, then Arc might be the one for you. The Canary Wharf wellness club boasts the largest sauna in the UK, with capacity to run contrast therapy classes for up to 50 people. You can partake in your own self-guided sessions or you can opt for one of the different classes, like Dopamine Reset, Happiness Hack, Breathe and Ground, and Morning Warrior. And if you wanna swap the club for the cold plunge, you can do that at Arc too with After Dark sauna parties.