Power cut causes traffic signal failure on A25 near Sevenoaks
National Highways reported disrupted journeys after signals failed at the A25 and M25 junction on 3 August 2026
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Traffic signals at the junction of the A25 and M25 near Sevenoaks, Kent, failed on the morning of 3 August 2026 after a power cut. National Highways, which manages the road network, reported the incident but did not specify how long the signals remained out of service.
The failure occurred at a busy interchange where the A25 meets the M25, a route used by commuters and freight traffic. Drivers were advised to approach the junction with caution, though no injuries or collisions were confirmed by Kent Police or National Highways.
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What residents need to know
National Highways issued traffic updates via its social media channels and traffic monitoring platforms. The agency did not disclose whether the power cut affected other infrastructure, such as street lighting or nearby residential areas.
Kent County Council, which oversees local roads, has not commented on the incident. UK Power Networks, the electricity distributor for the region, has not confirmed the cause of the outage or whether repairs were required.
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What happens next
National Highways has not announced any formal review of the incident. Drivers who encountered delays or witnessed the signal failure can report their experiences to the agency via its website or customer service line.
UK Power Networks may release further details if the outage was part of a wider disruption. Kent Police have not indicated whether they will investigate the incident, as no injuries or collisions were reported.
Questions this report answers
+What caused the traffic signal failure near Sevenoaks?
A power cut disabled traffic signals at the A25 and M25 junction on 3 August 2026. National Highways reported the incident, but the cause of the outage remains unclear, as UK Power Networks has not provided details.
+Were there any accidents because of the signal failure?
Kent Police and National Highways did not report any collisions or injuries linked to the traffic signal failure. Drivers were advised to proceed with caution, but no formal incidents were recorded.
+How long were the traffic signals out of service?
National Highways did not confirm how long the signals remained non-operational. The agency issued traffic updates but has not released a timeline for when the issue was resolved.
+Who is responsible for fixing the traffic signals?
National Highways manages the road network and traffic signals at the A25/M25 junction. UK Power Networks, the local electricity distributor, would handle any repairs related to the power cut, but neither has confirmed next steps.
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