Lines have now reopened following a failure of the electricity supply between London St Pancras International and London Blackfriars. However, whilst service recovers, trains may still be delayed by up to 20 minutes or revised.

Disruption is expected until 21:00.

Customer Advice:

Thameslink services are being delayed by up to 20 minutes. You will need to allow additional time if your are travelling this evening. Some short notice alterations and cancellations are possible, and some trains may have altered stops.

Other ongoing disruptions are impacting Thameslink services travelling towards Peterborough, Cambridge, Kings Lynn/Ely. This is also having flow on effects on other services as we work to recover the service timetable.

Please ensure to check your journey before travelling using the live map here.

For most journeys you can travel using your normal route, however if you wish to you an alternative we have ticket acceptance in place.

Ticket Acceptance

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

• London Underground on any reasonable route across London
• Southern and Gatwick Express services via any reasonable route

Alternative route maps to assist you replanning your journey can be found here.

Can you tell me more about the incident?

Unfortunately, we've been advised of a problem with the power supply to the signalling equipment between London St Pancras International and London Blackfriars. This means that trains can't move as normal, as a fully-working electricity supply is crucial to detecting and controlling the trains.

Thameslink are working closely with Network Rail and local electricity suppliers to make sure the power is restored. Until this is done, they expect there will be delays and changes to services in the area.

If you're on a train which is delayed in the area, it may take longer for us to get you to the next station, and onwards to your destination. Please listen out for information from the crew or contact Thameslink on social media if you need further support with your journey.

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.