Rio's Naturist Spa

Rio's bills itself as "London's Leading Naturist Health Spa," a purpose-built basement retreat on Kentish Town Road that its own site says has been "established for over 20 years." The pitch is unambiguous: it is a spa "for liberated people aged 21+ where you can enjoy the company of likeminded adults," open seven days and six nights a week. The venue sits a one-minute walk from Kentish Town Underground (Northern line) — "two doors past the Abbey National building" — and represents what the operators describe as a "multi million pound investment." Behind the discreet frontage is a warren of wet and dry heat. The spa lists two steam rooms (three in total), two sauna cabins, three large Jacuzzis and a plunge pool. Around the heat, guests get a relaxation area with tea, coffee and soft drinks, a television lounge, "a host of relaxation rooms," and an outdoor garden the site advertises as being "for that all over tan." The underground complex was refurbished after a 2016 fire and is widely cited as around 20,000 sq ft of facilities. Rio's runs on a "pay as you use" basis — as the site puts it, "You don't have to be a member... or even be a regular visitor." Single admission is £34 and mixed couples £40. It opens daily at noon; Monday to Wednesday and Sunday it closes the same evening (last entry 8–10pm), while Thursday, Friday and Saturday it stays open all night until 7am. One firm house rule stands out: on Saturdays, admission between 6pm and midnight is strictly mixed couples only. Pay-and-display parking is available on weekdays, with free parking to the front and back of the building at weekends.