UK Road Closed: National Highways

Motorists are advised of a significant disruption to their journeys on the M4 due to a high-severity closure. The affected stretch of the motorway is located near Slough, at National Highways Closure — 498897, and is expected to be closed from 21:30 on 09 August 2026 until 04:30 on 10 August 2026.

According to the latest information from National Highways, the closure is part of the ongoing maintenance of the Strategic Road Network. This essential work is being carried out to ensure the continued safety and efficiency of the UK's motorway network. Drivers are being warned to expect significant delays and are advised to plan their journeys accordingly.

Those planning to use the M4 during the closure period are recommended to use alternative routes to avoid the affected section of motorway. National Highways has provided detailed information on the diversion routes, and drivers are encouraged to check their website for up-to-date information on traffic conditions and roadworks. Additionally, motorists are advised to keep an eye on traffic apps and social media for the latest updates on the situation.

National Highways is working to minimise the disruption caused by the closure, and their team of experienced engineers and operators will be on site to ensure the work is completed as quickly and safely as possible. However, drivers should still expect significant delays, particularly during peak travel periods.

It is essential for drivers to be aware of the closure and to plan their journeys in advance. Leaving earlier than usual or considering alternative modes of transport may be a good option for those who can. Motorists are also advised to check their vehicle's condition before embarking on a journey and to ensure they have a full tank of fuel, in case they are unable to stop at a service station.

National Highways is committed to keeping drivers informed about roadworks and closures on the Strategic Road Network. By checking their website or following them on social media, motorists can stay up-to-date with the latest information on traffic conditions and roadworks.

For the latest information on this and other road closures, please visit Road Closures UK, where you can find detailed information on traffic conditions, roadworks, and closures across the UK.