The story
The Grand Union Canal (originally the Grand Junction Canal) was built at the end of the eighteenth century to link London with the Midlands. At Hanwell, a flight of six locks lifts the canal up the side of the Brent valley over a short distance. The flight is a scheduled ancient monument.
Alongside the locks runs the long brick wall of the former Hanwell Asylum, which had its own canal dock; bricked-up arches in the wall show where barges once delivered coal. Close by, Three Bridges, designed by Isambard Kingdom Brunel, is a remarkable crossing where a road, a canal and a railway all intersect at different levels.
What to look for
- The six locks and their lock-keepers' cottages.
- The asylum wall, with its bricked-up dock arches.
- Three Bridges, one of Brunel's last projects.
- The Brent River Park and wildlife along the canal.
Combine it with
The towpath leads east to Brentford and the Thames, and west towards Southall. Pitzhanger Manor in Ealing is a short drive away.
Visiting tips
The towpath is shared with cyclists, so stay alert. Narrowboats often pass through the locks at weekends, which is fun to watch. Wear comfortable shoes, as the towpath can be muddy.
Getting there
Hanwell station (Elizabeth line) is a short walk from the canal. With Mason & Green, we can drop you near the locks and collect you further along the canal.
Frequently asked questions
How many locks are in the Hanwell Flight?
There are six locks in the flight.
What are Three Bridges?
A crossing designed by Brunel where a road, canal and railway meet at three different levels.
Can you walk along the canal?
Yes. The towpath is open to walkers and cyclists.