Beckenham Place Park has the only purpose-built open-water swimming lake in London: 285 metres long, up to 3.5 metres deep, and open all year for booked sessions. The park itself is free and never closes. Swimming is not free, and the price is the one thing the operator does not publish outside its booking system.
The park is in Lewisham, on the borough boundary with Bromley, and it is bigger than it looks on a map: ancient woodland, a Grade II* Georgian mansion, a parkrun course, a BMX and skate park, playgrounds and the lake. Direct Thameslink trains from Blackfriars take 29 minutes to Beckenham Hill station, and the park gate is less than five minutes from the platform.
Our round-up of swimming ponds and lidos in London sets this against the Hampstead ponds and the heated lidos, and says where you must not swim at all. This page is about the lake and the park in detail.
Beckenham Place Park at a glance
- Park entry
- Free, open 24 hours a day, 365 days a year
- The lake
- 285 metres long, up to 3.5 metres deep. Pre-booked swimming and paddleboarding sessions only, run by PTP
- Session price
- Not published outside the booking system. Budget separately for a Sports Guardian wristband at £19.95
- Minimum age to swim
- 8, with a competency test. Nobody under 8 is allowed in the water
- Nearest station
- Beckenham Hill (Zone 4), under five minutes to the gate. Ravensbourne for the southern side; Beckenham Junction 10 to 15 minutes
- From central London
- 29 minutes direct from Blackfriars on Thameslink, half-hourly
- Car park
- Pay and display 8am to 5pm daily, 108 spaces, six blue badge bays, free for four hours with a blue badge
- Toilets at the lake
- None. The nearest are at the Homestead courtyard, three to four minutes away
The lake was restored, not dug from scratch
You will read that the lake was created in 2019. That is not quite what happened, and the park's own history is clearer. A lake was a central feature of the grounds in Edwardian times, and the Mayor of London funded bringing it back into use as part of a larger restoration. Lewisham won a £5 million Heritage Lottery Fund grant in 2016 to rebuild the Homestead buildings, which had burnt down in 2011, and to restore the pleasure gardens. The park relaunched in July 2019.
Before that, and for decades, this was a public golf course. The estate itself goes back further: John Cator, a timber merchant, bought it and built the mansion in 1762. The Greater London Council ran the park from 1965 and Lewisham took over in 1972.
What that means for a visitor is that the lake is a designed Edwardian water body adapted for swimming, not a leisure-centre pool with a muddy bottom. It is a long, narrow, deep body of water with staff on the bank, and the parkland around it is two and a half centuries old.
Photo: Doyle of London · CC BY-SA 4.0 · Wikimedia Commons · resized
Booking a swim: the wristband, the induction and the age rules
You cannot turn up and swim. Sessions are booked in advance through a system called Sports Guardian, which doubles as the operator's safety register: everyone on the water wears a wristband with a QR code, and staff scan you in so they know exactly who is in the water.
The wristband costs £19.95 and is bought separately from the swim. Guest bands are available and go back in a post box at the end of the session; losing one costs £5. The band scheme has three membership levels: Bronze is free and covers pay-as-you-go booking, Silver is £10 a year and Gold £25 a year, both of which give access to monthly and annual swim memberships.
If you plan to swim in the colder months you will need your own band, because the operator cannot attach a cold-water induction to a guest account. The induction is a one-off, done once before your first cold swim rather than every time.
Nobody under eight gets in this lake, and 8 to 14 means a swim test. Children aged 8 to 11 must swim 25 metres on their front, 25 metres on their back and hold a star float on front and back for three to five seconds. Ages 12 to 14 must swim 50 metres and hold a star float on the back. One adult may supervise two children aged 8 to 11 in the water, or up to five aged 12 to 14 from the bank. From 15 a swimmer can book alone. Plan for this before you travel, not at the water's edge.
How cold it really is, and why the published number may be old
The operator displays a lake temperature on its Beckenham page, which is the right thing to do. When we looked in late September 2026, the figure shown was 19.1°C and it was dated 1 May 2026, so the number on the page had not moved for nearly five months. Treat it as an indication that the page exists rather than as today's water.
Our estimate, for planning rather than for packing: an unheated London lake of this size will sit in the high teens in August, fall through the teens during autumn and reach single figures by midwinter. That is why the cold-water induction exists at all. If the temperature decides whether you get in, ask when you book rather than relying on a figure printed on a web page.
Paddleboarding is the alternative if the water is too cold for you, because you stay mostly out of it. The operator runs paddleboard sessions, paddleboard yoga, kids' and family sessions and parties on the same lake, with hire from age two upwards when accompanied by an adult. Our page on paddling on the Thames explains why a managed lake is the sensible place to learn before going anywhere near a tidal river.
Two health issues the operator is open about
Blue-green algae grows in the lake in warm weather, as it does in most still water in London. The operator has installed an ultrasonic device to keep levels down and runs a daily visual check on a traffic-light system: green means the water is clear or slightly green-brown with algae that breaks up easily, amber means brown-green water with small clumps that do not break up, and red stops swimming altogether. The advice is to wash your hands before eating anything and to shower as soon as you can afterwards. There are no showers at the lake yet.
The other is swimmer's itch, which the operator calls duck mites. It is caused by the larvae of parasitic flatworms that live in waterfowl and use snails as an intermediate host; they burrow into human skin by mistake and produce an itchy rash of red bumps that usually settles within a week. Drying off thoroughly and immediately after a swim is the practical prevention. If a rash worsens or looks infected, the advice on the operator's page is to see a doctor, and to tell them you have been in open water.
The facilities at the lake are thin, and the operator says so. There is no running water at the lakeside and no lavatory: the nearest are at the Homestead courtyard, three to four minutes' walk away. Bring your own drinking water, a towel you can dry off with properly and a plan for changing. This is the main difference from the Hampstead ponds, where there are changing areas at the water.
The rest of the park, which is free
Most people here are not swimming. The park is open around the clock every day of the year, and the lake is one feature among many: ancient woodland with nature trails, two playgrounds, an outdoor gym, a BMX track and skate park on the Old Bromley Road side, a weekly parkrun and miles of cycle routes with racks at the mansion and at the lake. Our page on running routes in London covers where else a visitor can find a Saturday parkrun.
Beckenham Place Mansion, the Grade II* Georgian house John Cator built, is used for weddings, artists' studios and a programme of arts and community events, and has a cafe and bar with a garden. The Homestead courtyard, rebuilt after the 2011 fire, holds a cafe, an education centre run with the Field Studies Council in an 18th-century stable block, and a couple of small independent shops. Stumps Hill Pond near the mansion was restored in 2019 with money raised by the Friends of the park.
For comparison with the other big free estates in this half of London, see our guide to Morden Hall Park and south London's estates; for a park with more formal gardens and a boating lake instead, Dulwich Park is on the same side of the city. Crystal Palace Park is the other large one nearby and has the dinosaurs. All of them are free, which puts them on our list of things to do in London for nothing.
Getting there, and which gate to use
Beckenham Hill station is the one you want and the walk from the platform to the park entrance is under five minutes. Direct Thameslink trains run from Blackfriars in 29 minutes, roughly every half hour; our explainer on how Thameslink works covers the route through central London. From London Bridge there is no direct train: you change at Catford, which involves a short walk between Catford Bridge and Catford stations, and the whole journey takes about 27 minutes.
Ravensbourne station, one stop further, is on the far side of the woodland and is the better choice for the southern and eastern parts of the park. Beckenham Junction, 10 to 15 minutes' walk away, has trams as well as trains and gets you in via the Beckenham Place Park gate.
By bus, the 54 from Lewisham and Elmers End stops on Beckenham Hill outside the main gate. Routes 320, 208, 181 and 136 stop on Bromley Road near the Green Man, about ten minutes from the Southend Lodge gate or from the Old Bromley Road entrance for the BMX track. Route 354 stops outside Ravensbourne station.
Driving is possible but discouraged. The pay-and-display car park off Beckenham Hill Road has 108 spaces and six blue badge bays, operates every day from 8am to 5pm, charges by vehicle emissions and is free for four hours to blue badge holders. Parking on double yellow lines is enforced, and parking outside the mansion is not allowed without prior arrangement.
Frequently asked questions
How much does it cost to swim at Beckenham Place Park?
The session price is only shown inside the operator's booking system and is not published on its website, so we cannot quote it. What is published is the cost of the compulsory Sports Guardian wristband, £19.95, and the optional membership tiers at £10 and £25 a year. Check the price when you book.
Is the swimming lake at Beckenham Place Park open in winter?
Yes. Sessions run through the year, but during colder periods you must complete a one-off cold-water swimming induction before you enter the water, and you need your own wristband rather than a guest one, because the induction cannot be attached to a guest account.
Can children swim in the lake?
From the age of eight, and only after passing a competency test: 25 metres on the front, 25 metres on the back and star floats for ages 8 to 11, or 50 metres and a star float for ages 12 to 14. Under-eights are not permitted in the water at all. Supervision ratios are strict, so read them before travelling.
Are there toilets and showers at the lake?
No showers and no lavatories at the lakeside, and no running water there either. The closest toilets are at the Homestead courtyard cafe, three to four minutes' walk away. The operator says showers are planned but not in place.
How do you get to Beckenham Place Park from central London?
Take a Thameslink train from Blackfriars to Beckenham Hill: 29 minutes, about every half hour, and under five minutes' walk from the station to the park. From London Bridge you have to change at Catford. Beckenham Hill is in fare Zone 4, so contactless pay as you go works; our guide to London's travel zones explains what that costs.
Sources
- Beckenham Place Park (London Borough of Lewisham) - The lake (checked September 2026)
- Beckenham Place Park - Visit: opening, businesses and facilities (checked September 2026)
- Beckenham Place Park - A brief history and current projects (checked September 2026)
- PTP - Beckenham Place Park lake: activities and lake temperature (checked September 2026; operator of the lake under concession)
- PTP - Beckenham frequently asked questions: booking, age rules, algae, swimmer's itch, travel and parking (checked September 2026)
- Transport for London - Beckenham Hill station data, fare zone (checked September 2026)
- Transport for London - Journey Planner, Blackfriars to Beckenham Hill (checked September 2026)