There seems to have been two notifications from CRT and the OP has copied and pasted both of them and not kept the original formatting of the later one and so it looks like part of the first.
1st Notification:
Navigation Closure Update
Braunston Lock Flight
Details
Type: Navigation Closure
Waterway(s): Grand Union Canal
From: 14 June 2026, 3:47pm
To: On-going
Region: East Midlands
Reason: Repair
Subject to review on: 25 June 2026
Location
Closest waterway: Grand Union Canal
Starts at: Lock 1, Braunston
Ends at: Lock 6, Top Lock
Descriptions
Update 15 June 2026, 10:28am
We have attended Lock 2 this morning to further inspect the lock beam. The beam is rotten and therefore the lock is inoperable.
Until we are able to arrange a repair, Braunston Lock flight will need to close.
As soon as we have further information on the repair we will update this notice.
Original 14 June 2026, 3:48pm
The offside top gate at this lock has sustained damage, and is currently not able to be operated. The towpath side can still be used.
2nd Notification:
Navigation Restriction Update
Braunston Lock Flight
Details
Type: Navigation Restriction
Waterway(s): Grand Union Canal
From: 14 June 2026, 3:47pm
To: On-going
Region: East Midlands
Reason: Repair
Subject to review on: 25 June 2026
Location
Closest waterway: Grand Union Canal
Starts at: Lock 1, Braunston
Ends at: Lock 6, Top Lock
Descriptions
Update 15 June 2026, 11:19am
Apologies—this closure was raised in error.
Lock 2 remains open to narrowboats, as the towpath gate can still be used.
However, widebeam boats are unable to pass through the lock. As a result, the lock flight is currently closed to widebeam boats until repairs can be carried out.
Original 14 June 2026, 3:48pm
The offside top gate at this lock has sustained damage, and is currently not able to be operated. The towpath side can still be used.