M25 Overnight Closures Planned for Early September 2026
Drivers should check routes as multiple link and slip roads will be shut between 10pm and 5.30am.
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Drivers planning to use the M25 between Tuesday, September 1, and Friday, September 4, 2026, should be aware of overnight closures. The works are scheduled to take place each night from 10pm until 5.30am the following morning. Several specific link and slip roads will be affected across the three nights.
Tuesday, September 1
M25 Lane Closures Cause Significant Delays
Motorists face lengthy journeys as traffic disruption continues on the orbital route.
On Tuesday night, five closures are scheduled. These include the link road from M25 clockwise junction 12 to M3 eastbound junction 2, and the M25 anti-clockwise junction 12 to M3 eastbound junction 2 link road. The M25 clockwise junction 20 exit slip road will also be closed, as will the M25 anti-clockwise junction 8 entry slip road. Additionally, the link road from M25 anti-clockwise junction 10 to A3 northbound Wisley will be shut.
Wednesday, September 2
Wednesday night is expected to have the most significant disruption, with seven closures planned. The link roads between M25 junction 12 and M3 junction 2 (both clockwise and anti-clockwise) will be closed. The M25 anti-clockwise carriageway and slip road between junction 17 and junction 16 will be shut. The M25 clockwise junction 20 exit slip road and the M25 anti-clockwise junction 8 entry slip road are also affected. Furthermore, the link roads from M25 anti-clockwise junction 16 to M40 eastbound and westbound junction 4B will be closed, along with the link road from M25 anti-clockwise junction 10 to A3 northbound Wisley.
M25 Crash: Two Lorries and Van Cause Long Delays
An accident involving three vehicles has led to significant traffic disruption on the motorway.
Thursday, September 3
Four closures are scheduled for Thursday night. These include the M25 clockwise junction 20 exit slip road and the M25 anti-clockwise junction 8 entry slip road. The link roads from M25 anti-clockwise junction 16 to M40 eastbound and westbound junction 4B will be closed, as will the link road from M25 anti-clockwise junction 10 to A3 northbound Wisley.
As reported by This Is Local London, drivers are advised to check their specific routes before travelling during these overnight periods to account for the planned closures and potential delays.
Questions this report answers
+When will the M25 be closed overnight?
The M25 will have overnight closures from Tuesday, September 1, to Friday, September 4, 2026. All closures are scheduled to begin at 10pm and end at 5.30am the following morning.
+Which parts of the M25 will be closed?
Several specific link and slip roads will be closed. Tuesday will see five affected roads, Wednesday will have seven, and Thursday will have four. The closures affect junctions including 8, 10, 12, 16, 17, and 20, and link roads to the M3, A3, and M40.
+What should drivers do?
Drivers planning to use the M25 overnight during this period are advised to check their specific routes before setting off. This will help them account for the planned closures and any potential impact on their journeys.
WE FILE
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The London Travel Desk assembled this report from the outlets listed below. Language-model drafting is reviewed under human editorial supervision, with scoring notes and corrections kept visible.
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