A significant travel warning has been issued for rail passengers across London and the South East, with major disruption expected to persist until the end of the day. The widespread issues are severely affecting Gatwick Express, Southern, and Thameslink services, leading to cancellations, severe delays, and revised timetables.
Incidents Causing Widespread Chaos
A series of incidents across the networks have resulted in all lines being disrupted this morning, Wednesday 4 February 2026. One primary cause is a fault with the signalling system between Norwood Junction and London Blackfriars, which has disrupted various lines on London's rail network.
Additionally, a train derailment has occurred at Selhurst depot in Croydon. This incident means multiple trains are unable to leave the depot, causing services to be cancelled or significantly altered. The combined effect of these problems is creating a cascade of delays and service interruptions.
Severe Impact on Key Services
National Rail has confirmed that trains across these networks may be cancelled, severely delayed by up to an hour, or subject to revision. The major disruption is anticipated to continue until the end of the day. Customers planning to travel have been warned that their journeys could take at least 45 minutes longer than usual.
Those looking to travel to or from London Bridge will encounter a significantly reduced service. Passengers are advised to consider travelling to London Victoria as an alternative where possible. Thameslink services running via London Bridge are also experiencing significant delays.
Specific Service Suspensions and Alterations
Other Thameslink services are suspended and will not run in both directions until further notice. Affected routes include London Bridge to East Grinstead, Brighton to Cambridge, and Bedford to Three Bridges. Passengers travelling to Gatwick Airport or Luton Airport Parkway are urged to allow at least an extra hour for their journey to ensure they make their flight connections.
Service alterations are also expected on some Southern services, which could be suspended, diverted, or reduced. The derailment at Selhurst depot has further impacted trains running between Highbury & Islington and West Croydon, which may be cancelled, revised, or diverted to Crystal Palace.
Stations including Penge West, Anerley, Norwood Junction, and West Croydon will not be served, with disruption at these locations also expected to last until the end of the day.
Ticket Acceptance and Compensation Advice
To assist affected passengers, tickets will be accepted on some other rail and bus services via other reasonable routes at no additional cost if a journey has been disrupted. Travellers are encouraged to check the National Rail website for specific details on where they can use their tickets.
Passengers may also be entitled to compensation if they experience a delay. It is recommended to keep your train ticket and make a note of your journey details to support any compensation claim. This proactive step can help streamline the process for seeking reimbursement for the inconvenience caused.
The ongoing disruption underscores the vulnerability of key rail infrastructure and the ripple effects that signalling faults and operational incidents can have across the network. Commuters and travellers are advised to plan ahead, allow extra time, and stay updated with the latest travel information throughout the day.
