| Sat 25th Apr | Berkhamsted |
| Sun 26th Apr | Hemel Hempstead |
| Sat 2nd May | Rickmansworth |
| Sun 3rd May | Watford |
| Sat 9th May | Berkhamsted |
| Sun 10th May | Hemel Hempstead |
| Thu 14th May | Uxbridge & Cowley |
| Fri 15th May | Harefield |
| Sat 16th May | Rickmansworth |
| Sun 17th May | Watford |
| Starts | Ends | |
| Thu 16th Apr | Mon 25th May | Navigation Closure - Grand Union Canal, Lock 84 Copper Mill Lock, Harefield Original 17 April 2026, 12:49pm Due to what appears to vandalism to the towpath ground paddle above Copper Mill Lock, the lock is no longer able to equalise. Engineers are in the process of determining what is required to fix the ground paddle. We will update this notice on Tuesday 21/04/2026. Copper Mill lock is closed whilst a repair is sought, please moor up safely until further information becomes available. Thank you for your understanding. https://canalrivertrust.org.uk/notices/019d9b44-4ebe-7bde-b4d5-57f66413beaf |