London has a reputation for being expensive, and for years that reputation extended to the humble public toilet. The good news: in 2026, you almost never need to pay. Network Rail dropped the toilet charge at most major stations back in 2019, the city's biggest free museums all keep top-tier facilities, and savvy locals know the supermarket trick that works everywhere.
This guide covers the 12 most reliable places to find a free public toilet in London — sorted by area and by need. If you'd rather just see them on a map, our live London toilet map shows every free option around you in seconds.
Central London — the museum loop
If you're sightseeing in zone 1, you're never more than 10 minutes from a free, clean, well-maintained toilet inside one of London's free national museums. None of them require a ticket; you can walk in, use the toilets, and walk out.
British Museum (Bloomsbury)
The toilets behind the Great Court are spotless, accessible, and carry baby change. You can enter without a ticket — bag check takes about 2 minutes. There's a Changing Places facility on Level -1.
National Gallery + National Portrait Gallery (Trafalgar Square)
Both galleries share Trafalgar Square. Either has free, central, accessible toilets a few steps from the entrance. Handy if you've come up out of Charing Cross or Embankment.
Tate Modern + Tate Britain
Tate Modern's loos on the ground floor of the Turbine Hall are some of the cleanest free toilets in central London, and the building is open until 6pm most days, 10pm on Fridays. Tate Britain over in Pimlico is quieter and has a quicker queue.
V&A and the Natural History Museum (South Kensington)
Both kid-friendly, both have well-marked baby change, both free. The V&A's John Madejski Garden cafe loos are a good bet during peak hours.
Train stations — Network Rail did the right thing
Since 2019, all London terminals operated by Network Rail have free toilets. That includes:
Look for the WC sign once you're past the ticket gates — most are inside the gateline these days, but if you're not travelling, just ask staff at the gate and they'll wave you through. Many stations also have accessible toilets and Changing Places — see signage on the station map.
Supermarkets — the local hack
This one isn't on most tourist guides but every Londoner knows it: big-format supermarkets keep customer toilets and they don't check whether you've actually shopped. Sainsbury's, Tesco, Asda, Morrisons, Waitrose — all of them. Smaller "Tesco Express" / "Sainsbury's Local" branches typically don't.
Reliable central London supermarket toilets:
Hospitals and council buildings
NHS hospital main-entrance toilets are free, open 24/7, and almost always accessible. They're an underused option in residential areas. Same goes for council-run libraries — every London borough's central library has free toilets during opening hours, and most are wheelchair accessible. Westminster Reference Library, Kensington Central Library, and Camden's Pancras Square library are some of the best.
RADAR-key locations
If you have a RADAR key, you have a master key to over 10,000 accessible toilets across the UK — including hundreds in London. Many tube stations, bus interchanges, and parks have RADAR-locked accessible toilets that are completely free to use. Browse our full list of RADAR-key toilets by area.
What about pubs and cafes?
Most chains (Pret, Costa, Caffè Nero, Greggs) make a token effort to enforce customer-only toilets. In practice, walking in with confidence works in most central London branches. If you'd rather buy something to be polite, a £1 pastry beats the £1.50 you'd have spent on a turnstile back in the bad old days.
Toilets to avoid (or budget for)
A few historical hold-outs still charge:
In every case, there's a free alternative within 5 minutes. Use the Where To Wee map to find one.
Tips for finding a free London toilet on the move
A few patterns that work everywhere in zone 1:
If you'd rather not memorise a list, download the Where To Wee app — it shows you every free toilet within walking distance, sorted by accessibility, baby change, and ratings. Works offline once you've loaded an area, which is useful on the underground.
Frequently asked questions
Is the toilet free at King's Cross station?
Yes. Since 2019, Network Rail dropped the 30p turnstile at King's Cross, St Pancras, Paddington, Euston and most other London terminals. Just walk in.
Are tube station toilets free?
Some tube stations have toilets, some don't. Where they exist, they're free; many are RADAR-key locked. Major interchange stations like Victoria, King's Cross and Liverpool Street tend to have them; smaller stations rarely do.
Where can I find a free accessible toilet in central London?
National museums (British Museum, V&A, Tate, National Gallery) all have free accessible toilets you can use without a ticket. Major train stations also have them. For a full directory, see accessible toilets in the UK or open the live map and apply the accessibility filter.
What's the best free toilet near Trafalgar Square?
The National Gallery (north side of the square) is your best bet — free, walk-in, accessible. The National Portrait Gallery next door is even quieter.
What if I have a baby change emergency?
The big four central department stores (John Lewis Oxford Street, Selfridges, Liberty, Fortnum & Mason) all have free baby-change rooms. So do all the national museums. The baby changing facilities directory lists every confirmed location across the UK.
Where To Wee is a free public toilet finder app for the UK. We don't take fees, ads, or sponsorship. If you want to help, the most useful thing is to add or rate a toilet next time you find one — every contribution makes the database more useful for the next person.
Where To Wee
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