Major disruption to Gatwick Express / Great Northern / Southern and Thameslink services until approximately 18:00
Service alteration details
Incident reported: Tuesday 11 November 2025 at 05:25
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Last updated
Tuesday 11 November 2025 at 11:29
Train operators affected
Route(s) affected
Gatwick Express services between London Victoria and Brighton
Great Northern on various routes
Southern services between London Victoria and Bognor Regis / Brighton / Eastbourne / Hastings / Havant / Horsham / Littlehampton / Ore / Reigate, also between London Bridge and Caterham
Thameslink services between Bedford and Brighton / Gatwick Airport / Haywards Heath / Three Bridges, between Cambridge and Brighton, between Peterborough and Horsham
Description
A number of incidents are affecting Gatwick Express / Great Northern / Southern and Thameslink services today. As a result, trains may be cancelled, delayed by up to 90 minutes or revised.
A visual disruption map video is now available.
This is expected until 18:00.
Customer advice:
We strongly advise you do not travel until a later time. If you must make a journey now you will need to use an alternative route, or make your own arrangements to reach your destination.
If you are travelling now you will need to allow at least 90 minutes of extra time.
Thameslink, Southern and Gatwick Express services across the whole network have been subject to alterations, cancellations and significant delays due to a number of incidents:
A fault with the signalling system in the Purley area is causing significant disruption to services running across the network this morning
Additionally there has been an operational incident in the same area which has caused significantly longer delays to services
We've also had a fault with the signalling system in the Hatfield area which has now been fixed
A trespasser has also been reported on the line between Oxted and East Croydon.
If you are travelling to/from London Bridge or London Victoria, to the coastal routes:
Please delay your travel where possible as services are significantly disrupted this morning.
An extremely reduced service will operate on most London-coastal routes, with some services not having a train service until much later today. If your journey is essential, you will need use an alternative routes.
If you are travelling to/from Gatwick Airport:
You will need to use an alternative route for your journey. Services to/from Gatwick Airport will be significantly reduced meaning you may need to make your own arrangements for travel.
Ticket acceptance is in place with local bus services and other operators which you can make use of.
Please check before you travel this morning. If your train is affected then you may need to take an alternative service, changing trains part way through your journey, or make use of local bus services.
This is how we expect services to be affected, however this is subject to change at short notice:
Gatwick Express services will be suspended
Thameslink services that run between Three Bridges and Bedford (stopping services via Redhill) are suspended
Thameslink services between Brighton and Cambridge are suspended
Southern services that run between London Victoria and Reigate / Gatwick Airport (via Redhill) are suspended
Southern services that run between Eastbourne and London Victoria are suspended (services that run between Ore and London Victoria will continue to run)
Services that run between Caterham / Tatteham Corner and London Bridge will run between Caterham/Tatttenham Corner and Purley only
Other services will be subject to delays, alterations and cancellations. Some services may have cancelled stops, or will terminate and restart at a different station to normal.
Ticket acceptance:
Tickets will be accepted for no extra cost on the following:
North of London
Southern and Thameslink services on any reasonable route, including between Brighton/the coast, Gatwick Airport and London
Great Northern services on any reasonable route
Greater Anglia services between London Liverpool Street, Cambridge and Ely
London Overground services on the Weaver line from London Liverpool Street and Enfield Town, also on the Lioness line between London Euston and Watford Junction
LNER services between Peterborough and London Kings Cross
Within London
London Underground between London Terminals
London Buses between Redhill and East Croydon, also between London, Potters Bar and Crews Hill
East Midlands Railway services between London St Pancras International, Luton Airport Parkway and Bedford
Elizabeth line services between Farringdon, London Liverpool Street and Abbey Wood
London Tram services between Beckenham Junction, East Croydon, Mitcham Junction and Wimbledon
South of London
Southern services on any reasonable route, including services along the West/East Coastway
Great Western Railway services between Reigate, Redhill and Gatwick Airport
South Western Railway services between London Waterloo, Wimbledon, Epsom, Dorking, Havant and Portsmouth Harbour
Southeastern services on any reasonable route between London, Tonbridge and Hastings
The following Brighton & Hove bus routes:
Regency 29, 29A, 29B, 29X between Brighton, Lewes, Uckfield, Crowborough, Eridge, and Tunbridge Wells.
Regency 54 between Eastbourne, Polegate, and Uckfield
The following Metrobus routes:
3 between Gatwick Airport, Three Bridges, and Crawley
10 between Gatwick Airport and Crawley
20 between Horley, Gatwick Airport and Three Bridges
100 between Redhill, Earlswood, Salfords, Horley, Gatwick Airport, Crawley, and Three Bridges
231 for Lingfield (War Memorial), Edenbridge, Penshurst, and Tunbridge Wells
270 between East Grinstead, Haywards Heath, Burgess Hill, Hassocks, and Brighton
271 between Crawley, Haywards Heath, Wivelsfield, Burgess Hill, Hassocks, Preston Park, and Brighton
272 between Crawley, Three Bridges, Haywards Heath, Wivelsfield, Burgess Hill, Hassocks, Preston Park, and Brighton
273 between Crawley, Hassocks, Preston Park and Brighton
281 between Crawley, Three Bridges, East Grinstead, Dormans, and Lingfield
291 between Crawley, Three Bridges, East Grinstead, and Tunbridge Wells
400 between Caterham, Redhill, Earlswood, Salfords, Horley, Gatwick Airport, Crawley, Three Bridges
405 between Redhill, Merstham, Coulsdon South, Coulsdon Town, Reedham, Purley, South Croydon, and East Croydon
409 between Caterham, Godstone, Lingfield (War memorial), and East Grinstead
410 between Godstone, Hurst Green, Oxted, Nutfield (High Street), and Redhill
420 between Tattenham, Tadworth, Lower Kingswood, Reigate, Redhill, Earlswood, Salfords, Gatwick Airport, and Crawley
430 / 435 between Redhill, Reigate, Earlswood, and Merstham
460 between Tattenham, Tadworth, Lower Kingswood, Reigate, Redhill, Earlswood, Salfords, Horley, Gatwick Airport, and Crawley
411 between Merstham, Redhill, and Reigate
424 for Reigate, Redhill, Horley, Crawley
Planning your journey:
You can see the live departure boards, and view a live map of the network.
You can also view an alternative route guide.
If you're travelling in the London area, you can plan journeys on alternative routes by using the TfL Journey Planner.
You can use the Gatwick Express, Southern and Thameslink apps to find up-to-date information.
Can you tell me more about the incident?
Trains travelling through the Purley area are experiencing delays, alterations and cancellations due to a signal fault.
Railway signals warn drivers when they need to stop. Normally, a green light means the track is clear, while yellow signals warn of a red light ahead.
Signalling works on "fail-safe" principles. If a signal cannot change properly, it defaults to a more restrictive setting, causing trains to slow down even if the track is clear.
Network Rail maintains the system, and Southern, Thames and Gatwick Express are working with them to fix the fault as quickly as possible. In the meantime, we are monitoring services and doing our best to keep to the timetable.
Check before you travel:
You can check your journey using the National Rail Enquiries real-time Journey Planner
.Compensation:
You may be entitled to compensation if you experience a delay in completing your journey today. Please keep your train ticket and make a note of your journey, as both will be required to support any claim.