The Kempton Great Engines

Dating from the 1920s, these engines used to supply North London with drinking water. One is now fully restored and on selected weekends can be seen working.


The two 'Great Engines' were the heart of the water treatment works at Kempton Park in Middlesex, supplying North London with drinking water taken from the Thames. The magnificent building in which they are housed is a national monument.

The engines date from 1926-1929 and are thought to be the biggest ever built in the UK. Each engine stands 62 ft tall from the basement to the top of the valve casings and weighs over 800 tons. They were supplied with steam by a battery of coal fired water-tube boilers.

One of the two engines has been restored to full working condition and can be seen in steam on selected open weekends throughout the year. Guided tours are available over the other engine at other times.

Prices and opening times

Child Ticket Free
Concession Ticket £6.00 per ticket
Adult Ticket £7.00 per ticket

Lower prices for static displays. Children under 1.4m not admitted to the engine house.

We regret that we do not have credit card facilities at the moment.

Opening Times

Opening times are only on selected weekends. Please check the website for exact dates.

During opening weekends gates open from 10:30 - 16:00; the last engine will be active at 15:00.

Venue Details & Map

The Kempton Great Engines

Kempton Park Water Treatment Works
Snakey Lane
TW13 6XH
+44 (0)193 276 5328
Public transport:
Kempton Park, cross the A316 and turn right towards Twickenham you will see the twin Chimneys, the footpath continues to the roundabout at the Unigate Dairy, turn left and keep turning left as above


Payment Facilities
Free entry

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