M25 traffic chaos: Major Surrey motorway closure sparks 45-minute delays as drivers warned over Heathrow and Gatwick journeys
M25 traffic delays build after serious collision in Surrey. PA Archive/PA Images
Thousands of motorists are facing major disruption on the M25 in Surrey after a serious collision forced the closure of a key section of the motorway during the busy morning travel period.
The M25 was closed anti-clockwise between Junction 11 near Ottershaw and Junction 10 near Cobham and Wisley, creating significant congestion and delays for drivers returning to work after the summer holiday period.
Police and highways officials warned that the closure could affect journeys across the South East, including travel to Heathrow and Gatwick airports, as motorists were urged to check their routes and allow additional time.
M25 Closed After Serious Collision in Surrey
The incident occurred shortly before midnight on Monday, August 31, prompting a Surrey Police-led response and an overnight investigation.
While Surrey Police completed its initial work on the carriageway at around 6am, the motorway remained closed as further work was required to clear the scene and manage the aftermath of the collision.
National Highways warned motorists that the closure could remain in place for several hours, with no immediate reopening time confirmed.
The disruption came at a particularly difficult time for road users, coinciding with the morning rush hour as many commuters returned to work following the bank holiday and summer break.
M25 Traffic Delays Reach 45 Minutes
National Highways reported significant congestion on roads approaching the affected section of the M25, with delays estimated at around 45 minutes in both directions.
Traffic quickly built around the closure, placing additional pressure on surrounding roads as motorists sought alternative routes.
Authorities urged drivers to avoid the affected stretch where possible and follow official diversion signs rather than relying solely on navigation apps, which can redirect large volumes of traffic onto already congested local roads.
The closure also affected the A245 Parvis Road, which was shut in both directions as emergency services and investigators dealt with the incident.
Heathrow and Gatwick Airport Travellers Warned to Check Journey Times
One of the most significant warnings issued during the disruption concerned passengers travelling to Heathrow and Gatwick airports.
Surrey Police cautioned that journeys to both airports could be affected by the M25 closure and advised travellers to check their expected journey times before leaving home.
The M25 is a critical route connecting major parts of London and the South East, meaning disruption in Surrey can quickly affect wider traffic networks.
Airport passengers with flights scheduled during the morning and early afternoon were advised to allow substantial additional time and consider alternative routes where appropriate.
With airport check-in deadlines and security requirements adding further pressure to travel schedules, delays on the M25 could prove particularly disruptive for international and domestic passengers.
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National Highways Issues Diversion Route for M25 Motorists
National Highways introduced a signed diversion route for motorists affected by the anti-clockwise closure.
Drivers travelling through the area were instructed to follow the Hollow Square diversion symbol displayed on road signs.
The official diversion directs motorists away from Junction 11 through local routes towards Woking and Cobham before reconnecting with the motorway network near Junction 10.
The route includes sections of the A320, A245 and A3, allowing drivers to bypass the closed section of the M25.
Officials stressed that drivers should expect congestion on these alternative roads due to the increased volume of traffic being diverted away from the motorway.
Why the M25 Closure Could Cause Wider South East Travel Disruption
The M25 is one of the busiest and most important roads in the United Kingdom, serving as a major orbital motorway around London and connecting several key motorways and transport corridors.
A closure between Junctions 10 and 11 can affect traffic far beyond the immediate collision site, particularly during peak travel periods.
Drivers heading towards London, the South Coast, Heathrow, Gatwick and other major destinations could experience longer journey times as congestion spreads across connecting roads.
The incident also highlights the importance of checking live M25 traffic updates before travelling, particularly when major closures or police-led incidents are underway.
Motorists travelling through Surrey were urged to remain patient, follow official instructions and avoid attempting unsafe shortcuts through unfamiliar residential or rural roads.
When Will the M25 Reopen?
At the time of the latest update provided in the report, authorities had not announced a confirmed reopening time for the affected anti-clockwise section of the M25.
Surrey Police said the motorway would remain closed for a number of hours to allow for a thorough investigation, while National Highways said work was continuing to clear the scene.
Drivers were advised to monitor official traffic updates before beginning their journeys, particularly those travelling between Surrey, London, Heathrow and Gatwick.
The situation could change as recovery and investigation work progresses.
FAQ: M25 Traffic Closure and Surrey Delays
Why is the M25 closed today?
The affected section of the M25 in Surrey was closed following a serious collision. Surrey Police led the initial response and investigation, while further work was required to clear the motorway.
Which part of the M25 is closed?
The closure affects the anti-clockwise M25 between Junction 11 near Ottershaw and Junction 10 near Cobham and Wisley.
Drivers should check the latest official traffic updates before travelling because motorway closures can change as recovery work progresses.
What happened on the M25 in Surrey?
Authorities described the incident as a serious collision. Police carried out investigations overnight, and the motorway remained closed afterwards while further clearance and incident-related work continued.
How long are M25 traffic delays?
National Highways reported delays of around 45 minutes on approaches to the affected area at the time of the latest update. Actual delays can increase or decrease depending on traffic volumes and the progress of clearance work.
When will the M25 reopen?
No confirmed reopening time was provided in the latest update. Authorities said the closure could remain in place for several hours while the investigation and clearance work continued.
Motorists should monitor live updates from official traffic authorities before travelling.
Is the M25 closure affecting Heathrow Airport?
Yes, authorities warned that disruption on the M25 could affect journeys to Heathrow Airport. Passengers travelling to Heathrow were advised to check travel times before departing and allow extra time.
Is Gatwick Airport affected by the M25 traffic?
The closure could also affect journeys to Gatwick Airport, particularly for travellers using the M25 as part of their route.
Passengers should plan ahead, check current traffic conditions and leave additional time for potential delays.
What is the official diversion route for the M25 closure?
National Highways instructed motorists to follow the Hollow Square diversion symbol.
The diversion takes drivers away from the closed section via routes including the A320, A245 and A3 before allowing traffic to reconnect with the M25 near Junction 10.
Is the A245 also closed?
Yes. The report stated that the A245 Parvis Road was closed in both directions in connection with the wider police-led incident.
How can drivers avoid M25 traffic delays?
Drivers can reduce the risk of being caught in major congestion by checking official live traffic information before travelling, allowing extra journey time and following signed diversion routes.
Motorists should also be cautious when using navigation apps during major incidents, as alternative local roads may become congested quickly.
Which airports can be affected by M25 traffic problems?
Major disruption on the M25 can affect journeys to several airports, particularly Heathrow and Gatwick, depending on where the incident occurs and which sections of the motorway are closed.
Why does an M25 closure cause so much traffic disruption?
The M25 is one of the UK’s busiest motorway networks and connects major roads around London and the South East. When one section closes, traffic is diverted onto other motorways and local roads, creating congestion across a much wider area.
What should drivers do before travelling on the M25?
Drivers planning to use the M25 should check live traffic conditions, look for official National Highways and police updates, allow additional travel time and prepare for diversions.
This is particularly important during rush hour, holiday periods and when travelling to time-sensitive destinations such as airports.