ESPA Life is an extremely classy spa set in the eponymous five-star Corinthia Hotel, a short walk from London’s Covent Garden. The design is dazzling – from the stark white relaxation area to the black marble pool – while the wellness and mindfulness credentials are impressive. Book in for a session with a naturopath, an acupuncturist, a nutritionist or a personal trainer and combine it with a treatment. The changing rooms are larger and better equipped than some entire spas.