Hidden just minutes from Covent Garden is a true oasis right in the middle of the city that will instantly transport you to the thermal baths of ancient Rome. Book the Ultimate Bath experience (£135 for 90 minutes) to enjoy the full facilities at your leisure, including the caldarium (hot bath), frigidarium (cold bath), tepidarium (warm bath), balneum (‘bath of a thousand jets), vaporium (eucalyptus-scented steam room) and flotarium (salt bath), as well as a salt exfoliation area. To make your experience even more indulgent, you can add on signature massage treatments.

Situated at the top of the Jumeirah Carlton Tower in Knightsbridge is a serene space with 360-degree views of London’s skyline and a 20-metre pool encased in a glass roof, allowing you to swim in natural light by day and under the stars at night. There’s also an oversized jacuzzi, two steam rooms and a Himalayan pink salt sauna, while treatments have been devised by luxury skincare experts at Omorovicza, 111Skin, Aromatherapy Associates and TheraBody.

You don’t need to be staying at The Ned to take advantage of the luxurious spa facilities – spa day passes are available weekdays to everyone for £200, which is redeemable against any spa treatment. After you’ve unwound in the pool, sauna and steam room, treatments include a wide range of deeply relaxing massages, De Mamiel facials, akwaterra sandstone pods and brow, lash, nail and hair services.

At Rosewood London in Holborn you’ll find Sense, a tranquil space that offers a calming escape from city life. With a wide range of packages on offer to help you unwind and take a moment for yourself, the treatment menu here is extensive, with clinical offerings from the A-lister-coveted Face Place – the only place you’ll find it outside of the US.

For one of the most romantic day spa spots in the city, you can’t go wrong with the spa at the Shangri-La hotel. Located on level 52 of The Shard, there are stunning panoramic views across London guaranteed from the gym, sauna and jaw-dropping infinity sky pool – the highest swimming pool in London (and indeed western Europe). 

For the ultimate wellness retreat, Espa Life at Corinthia boasts four floors of luxurious relaxation options. As well as exceptional Espa treatments, the facilities here are world-class – think amphitheatre sauna, ice fountain and vitality pools all set in some of the most decadent surroundings imaginable.

Situated at Sea Containers hotel on the South Bank, Agua Spa focuses on spirituality, wellbeing and the mind-body connection. Holistic spa treatments include custom hot stone massages and specialist facials, while the beautiful spa lounge is designed to encourage a tranquil state of mind.

Nestled inside one of London’s most idyllic neighbourhoods, Cowshed’s Primrose Hill spa is the perfect spot for when you’re short on time but still want to enjoy the serenity of spa-like surroundings. With seven treatment rooms, you can choose from a wide range of body, face, hand and feet treatments. As well as its Primrose Hill location, you can also find Cowshed spas at Shoreditch House, Babington House in Somerset, St Moritz Spa & Hotel in Cornwall and Soho Farmhouse in Oxfordshire (members only).

Shoreditch’s Nobu Hotel boats a spa space as stylish as the rest of the hotel, with an extensive array of personalised services and spa packages that encompass relaxation, wellness and beauty. The spa experience menu comprises a range of relaxing body and facial treatments (it’s worth noting that weekday and weekend pricing differs) and after your treatment there are separate steam rooms for men and women to carry on the tranquil feelings.