Independent. Built from Canal & River Trust's own published notices, with no affiliation to or endorsement by the Trust.
The archive / Grand Union Canal
Locks 42, 43 and 44 - Marsworth Flight
A navigation closure on the Grand Union Canal, 6 January 2026 to 20 March 2026 — 73 days.
Source: this notice on canalrivertrust.org.uk
- Waterway
- Grand Union Canal
- Region
- London and South East
- Started
- 6 January 2026
- Status
- Reopened 20 March 2026
- Days shut
- 73
- CRT reason
- Repair
- Cause
- Wear and tear
- Asset
- Lock
Cause and asset are read from the notice prose, not CRT fields; the reason above is CRT's own.
Where
- Grand Union Canal: Lock 42 to Lock 44
Updates · 4
16 days with no update after the last one.
4 March 2026 · 56 days since the previous
Work on the Marsworth Flight has been delayed by severe weather throughout the project. As a result, the team has been unable to complete all required repairs within the original stoppage window. To allow the remaining work to be completed safely and to the required standard, we now need to extend the current stoppage until 20 March. Once the stoppage has ended, a further navigation restriction from 23–27 March will be in place to allow us to finish additional repair activities that cannot be carried out during the main stoppage period. During this time, short delays to boat movement may be necessary, and our team will assist with passage where required. We apologise for any inconvenience this extended closure may cause and thank you for your patience while we complete these essential works.
7 January 2026 · 19 days since the previous
Please be advised that the towpath will no longer be closed during these works.
Earlier updates · 2
19 December 2025 · 226 days since the previous
Please note that the navigation will remain open on 5 January while we mobilise to the works site. The navigation will then close at 1:00 pm on 6 January. Thank you for your understanding.
7 May 2025 · 0 days since the previous
This navigation and towpath closure encompasses three pieces of work. We will be doing a top & bottom gate replacement on lock 42, bottom gate replacement on lock 43 and bottom gate replacement and repairs to the top gate of lock 44.
Cite this: Canal closures, “Locks 42, 43 and 44 - Marsworth Flight”, https://crt-stoppages.pages.dev/notice/0196acc5-0382-7d1c-9f08-07596f859d72.
Every closure on Grand Union Canal · Download the data · Method and limits