Major disruption between London St Pancras International and London Blackfriars expected until 15:00 

Route(s) affected

Between Peterborough and Horsham, between Cambridge and Brighton, between Bedford and Three Bridges / Brighton, between Luton and Rainham (Kent), between Welwyn Garden City / Finsbury Park and Sevenoaks, between St Albans City and Sutton, and also between Kentish Town and Orpington

Description

A fault with the signalling system between London St Pancras International and London Blackfriars means the line towards London Blackfriars is disrupted.

As a result, trains running between these stations may be severely delayed by up to 30 minutes, cancelled or revised.

Major disruption is expected to continue until 15:00.

Customer advice:

Please check station screens and planners for the latest information for your journey, and allow an extra 20 - 30 minutes to travel as you may have to take an alternative route, or use alternative transport providers.

The following service changes will be in effect:

• Trains that normally run between Luton and Rainham (Kent) will run between Dartford and Rainham (Kent) only

• There is a reduced service running between Bedford and Gatwick Airport

• Trains running between Peterborough and Horsham will call additionally at Earlswood (Surrey) and Salfords
  

Ticket acceptance

You can use your ticket on the following, at no extra cost:

• London Buses between London Bridge and Dartford

• Southeastern trains between London Bridge and Dartford

• East Midlands Railway trains between Bedford and London St Pancras International

• Elizabeth line between Farringdon and Abbey Wood

• Southern services between London Victoria and East Croydon

Planning your journey:

You can use the Thameslink live departure boards, and you can also view a live map of the network.

You can also see the 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 also use the Thameslink app to find up-to-date information.

Can you tell me more about the incident?

This part of the network uses track circuits to detect trains. If a circuit fails, the system may think a train is still there, blocking others from moving forward.

Drivers must stop at red signals and get verbal permission to proceed at a reduced speed, which can cause significant delays, especially in areas with long track sections.

Faults can be caused by electronic issues or track obstructions. Network Rail is investigating, and we’ll share updates as soon as we have them.

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.