Photo of Kempton Steam Museum in Greater London1 / 2
Trains & Railways

Kempton Steam Museum

📍 Sunbury-on-Thames, Greater London

4.8(444 Google reviews)👶All ages

Grade II* listed museum in Sunbury-on-Thames housing the Sir William Prescott Engine — the world's largest working triple-expansion steam engine. Families can get close to running machinery on steam days, with guided tours and an on-site coffee shop.

Impressive machineryFriendly volunteersHands-on accessGood coffee shopEngineering historyRunning steam engine
★★★★★Featured review by Pippa McHale

So this photo was a rather unexpected discovery in the Art Noveau/Art Deco building known as the Kempton Steam Museum. The photo is of a mother and her daughters dressed in their silken 1920's finery. I was on a photographic recce today with Ken and Peter preparing for a shoot in this building scheduled for the beginning of August when I espied this framed photograph. The museum preserves two of the largest steam engines ever built. The triple-expansion engines pumped drinking water into reservoirs for the supply of London from 1929 to 1980. Steam was provided by six boilers fuelled by moving-chain grates. The engines were named after Sir William Prescott, chairman of the Metropolitan Water Board, and his wife Lady Bessie Prescott - the lady who is seated in the photograph alongside her two daughters.

🏆 Family Action Verdict

Best for families with children who have a genuine interest in engineering, industrial history, or machinery — the scale of the running engine is genuinely impressive and unlike anything at a typical museum. Older children get the most from the guided context, and the visual spectacle of the running engine holds younger children's attention too.

ℹ️ What to Know Before You Go

💡Visit on a steam day when the giant engines are running — the experience is entirely different from non-steam days
Seating in the coffee shop is sparse — claim a spot early if you plan to eat
🎟️Almost nothing is roped off — take advantage of the close access to both running and static engines
🚗Volunteer guides are very willing to talk — ask questions and they'll go deep on the history

💬 What Families Are Saying

View all reviews →
4.8

444 Google reviews

Awe-inspiring working steam engine50%
Friendly and knowledgeable volunteers30%
Exceptional close access to machinery20%
P

Pippa McHale

8 months ago

So this photo was a rather unexpected discovery in the Art Noveau/Art Deco building known as the Kempton Steam Museum. The photo is of a mother and her daughters dressed in their silken 1920's finery. I was on a photographic recce today with Ken and Peter preparing for a shoot in this building scheduled for the beginning of August when I espied this framed photograph. The museum preserves two of the largest steam engines ever built. The triple-expansion engines pumped drinking water into reservoirs for the supply of London from 1929 to 1980. Steam was provided by six boilers fuelled by moving-chain grates. The engines were named after Sir William Prescott, chairman of the Metropolitan Water Board, and his wife Lady Bessie Prescott - the lady who is seated in the photograph alongside her two daughters.

S

Steve Sargent

6 months ago

We went on a day when the giant engine was being driven by steam and it was very impressive. A display of British engineering at the height of its powers in the early 20th century. The volunteer staff are friendly and informative. The coffee shop is first rate, too. It's good that you can access almost all areas. Very little is roped-off, and you can get right next to the enormous moving parts of the engine while it is running. Unique.

T

Thomas Dowrick

a year ago

Amazing place, space and awesome to see such a machine running. Love that you can wander around the non running engine while the other is operational. The non running engine has a lot of parts pulled away and open so you can have a good look at it. The team there are lovely and makes for a really nice experience. There is a small refreshment and souvenir area for tea, sandwiches, cakes and other snacks.

P

Paulo Coll

6 months ago

This was our second visit to Kempton Steam Museum, and I highly recommend it! It’s definitely worth a visit, and we’re already looking forward to coming back again. Huge thanks to the dedicated team who keep this incredible piece of history running for everyone to enjoy—both now and in the future.

Reviews from Google

Overview

Kempton Steam Museum sits behind Thames Water's pumping station and contains the Sir William Prescott Engine, which once pumped 19 million gallons of London's drinking water daily. On steam weekends the engine runs under full power and visitors can walk around both the running engine and a second engine with panels removed for inspection. Volunteer guides are knowledgeable and approachable. Coffee shop on site with seating — sparse, so arrive early for a seat. All ages and toddlers welcome.

📍 Similar Activities Nearby

View more in Greater London