The Best Spa Days in London, and What They Actually Cost

London’s hotel spas are among the best in Europe and most of them will sell you a day pass without a room booking. That is the part people miss. You do not need to stay at the Bulgari to use the Bulgari spa, and an afternoon in one of these is a considerably better use of a free day in London than most things costing the same money.

Here is what the top tier actually offers, what it costs, and how to choose a spa day London will not overcharge you for.

Checked in September 2026, rechecked on 2 October 2026

The biggest change is at the Corinthia, whose spa is now Biome by Corinthia London and is a different proposition from the one this page and most others were describing. That is set out in full below.

Bulgari’s 25 metre pool and its 7:30am to 8pm hours were confirmed from the hotel, as were the Four Seasons Sky Suite’s steam shower and its two-hour sound bath experience. Day pass prices were the one thing none of these hotels publishes openly, so the figures below are indicative and should be confirmed when you book.

The best hotel spas in London

Biome by Corinthia London, Westminster

It is not called the Corinthia Spa any more. The spa has been rebranded and reconfigured as Biome by Corinthia London, and the old description of it, a 17 metre pool and a Finnish sauna and a treatment list running past sixty options, no longer matches what the hotel publishes.

What it sells now is a Spa Experience Pass, and its own list of what that includes is: a vitality pool, an amphitheatre sauna, a steam room, a cold plunge, a heated lounger, a sleep pod and relaxation areas. The structure is a guided Heat and Water Circuit, described as a sequence of priming, steam, sauna, plunge and integration, led by what they call a Biome curator. Individual elements are priced separately: the Biome Sync Sauna is £100 per person for 30 minutes.

This is still the one to pick if you want to spend most of a day on a thermal floor rather than arrive for a treatment and leave. But it is a different product from the one most guides are still describing, and the pass prices have moved with it, so get the current figure when you book.

Bulgari, Knightsbridge

171 Knightsbridge, SW7 1DW. The pool is 25 metres, colonnaded, and clad in Vicenza stone, with loungers and cabanas down one side, and the hotel calls it the most dramatic private pool complex in central London. There is a separate vitality pool with full body massage jets, finished in gold leaf glass tiles. The swimming pool is open every day from 7:30am to 8pm.

That 25 metres is what makes the longest-hotel-pool claim stand up. Day passes start around £80 and treatments from about £85, figures that could not be reconfirmed from the hotel’s own pages. Smaller and more sleekly designed than the Corinthia, and the pool is the reason to come.

The Ned, City of London

A £200 day pass that is redeemable against any treatment, which changes the arithmetic considerably: you are effectively buying a treatment and getting the facilities thrown in. The building, a former bank, is worth seeing on its own.

Four Seasons Park Lane

The draw here is the double-sized Sky Suite, with 180 degree views over Hyde Park and the skyline, a private steam shower rather than a steam room, and separate dressing and relaxation rooms. The published two-hour experience includes use of the spa facilities, a welcome drink and a sound bath session.

Even outside the suite the view is the point: the treatment rooms are glass-walled with floor-to-ceiling windows over the park and most include private relaxation pods. No other spa on this list can match the height.

The jet lag angle

Worth knowing if you are arriving on a long flight: several London spas now offer IV infusion therapy alongside conventional treatments, including drips aimed specifically at jet lag and rehydration, plus NAD+ protocols. New for 2026 in several of the big hotel spas.

Whether any of it does what is claimed is a separate question and the evidence is thin, but it exists, it is popular with business travellers, and you should know it is on the menu before someone offers it to you at £300.

The less exotic version works reliably: arrive, use the thermal suite, swim, have a massage, sleep properly that night. For a body clock that has crossed five time zones, that does more than any drip.

Spa hotels in London, and when you have to be a resident

There are two versions of this question and they have different answers. A spa day means buying an afternoon without a room. Spa hotels in London means booking the room, and at several of them that is the only way in at the weekend.

The Londoner in Leicester Square states the rule plainly on its own page for The Retreat, its spa on the lower floors: Friday, Saturday and Sunday are reserved exclusively for hotel guests. Midweek there is a membership and a guest route in. At a weekend there is not one, unless you are staying.

That is worth knowing before you plan a Saturday around it, and it is the cleanest example in London of why the two phrases are not interchangeable. What residents get there is a 12.5 metre pool, a hydro pool, sauna, steam room, cabanas, two treatment rooms and a gym that runs 24 hours. Pool access is complimentary for guests, from 6am to 10pm, and it is pre-booked in one hour slots rather than simply walked into.

The Londoner also publishes its children’s hours, which almost no hotel does, and they are the most useful numbers on the page if you want the pool quiet: children swim on weekdays from 10.30am to noon and 3.30pm to 5pm, and at weekends from 8am to 9.30am and noon to 1.30pm. Book outside those windows and the pool is an adult room.

At The Berkeley in Belgravia the wellness offer is now Surrenne, a members’ club spanning four floors with a rooftop pool, which is a different proposition again: closer to a private club with a hotel attached than a hotel spa you can buy a day in. The hotel does not publish non resident access or day rates on its own pages, so that is a phone call rather than a booking form.

The practical rule across all the spa hotels London has: if the date is a Friday, Saturday or Sunday, check the residents policy before you check the treatment list. Midweek, most of the spas on this page will sell you a pass. At a weekend, several will not, and the ones that will are quietly more expensive.

Choosing well

Facilities or treatment? This is the real decision. If you want a two hour massage and to leave, almost any of these works. If you want to spend an afternoon, you want thermal facilities and a proper pool, which narrows it to the Corinthia and Bulgari.

Check what the pass includes. “Spa day” means very different things: some include lunch and a treatment, some are facility access only. The Ned’s redeemable structure is unusual and good value if you were having a treatment anyway.

Weekdays are quieter and cheaper. Substantially so. A Tuesday afternoon in a London hotel spa can be close to empty.

Book the treatment, not just the pass. Facility access is usually available at short notice. The good therapists are not.

Allow longer than you think. Two hours is not a spa day. Four is. Most people under-book and then rush the part they were looking forward to.

Prices move. Everything above was accurate at the time of writing and these are entry-level rates. Confirm when you book.

If you want the place to yourself

Several London spas will hire out privately, which is a different proposition again and better than it sounds for a couple or a small group. Private spa hire in London covers who does it and what it costs.

And if the idea of travelling to a spa at all is the problem, mobile massage in London brings a qualified therapist to your hotel room instead, often at an hour’s notice.

For a shorter version of the same idea, the best barbers in London runs from a twenty pound clipper cut to a ninety minute grooming package at two hundred and twenty five, all with the minutes published beside the price.

For where to stay, the best hotels in London covers the properties several of these spas sit inside. Our main London guide has the rest.

London’s lidos are the outdoor version, and the sauna at Parliament Hill runs through the winter and closes for the summer.

The rest of the same afternoon: Savile Row and Jermyn Street, which keep workshop hours rather than shop ones and are worth timing carefully.

Mobile massage is the version that comes to you, usually within a couple of hours, where the thing to check is your hotel’s policy on visitors rather than the therapist’s.

Questions we get asked

Can you use a London hotel spa without staying there?

At most of them, yes. London’s hotel spas are among the best in Europe and the majority will sell you a day pass with no room booking. The policy varies by property and sometimes by day of the week, so it is worth confirming when you book rather than assuming, but the default answer is yes.

How much is a spa day in London?

Access starts around £80 to £95 for a day pass, with treatments from roughly £85 to £100 on top. One property sells a £200 day pass that is redeemable against any treatment, which changes the arithmetic considerably: you are effectively buying a treatment and getting the facilities included rather than paying for both.

Are IV drips and wellness extras worth it?

Whether any of it does what is claimed is a separate question and the evidence is thin. It exists, it is popular with business travellers, and it appears on menus at around £300, so the useful thing is simply to know it is on offer before somebody suggests it to you. Judge it on that basis rather than on the spa’s description.