A failure of the electricity supply between New Cross Gate and Forest Hill means that some lines are blocked.

As a result, trains between New Cross Gate and Norwood Junction may be cancelled, delayed or revised.

Disruption is expected until 07:30.

Southern / Thameslink customer advice:

Services towards London Bridge will run non-stop between Crystal Palace / Sydenham and London Bridge. This means the following stations will have no services stopping there in the direction of London Bridge:

• Forest Hill
• Honor Oak Park
• Brockley
• New Cross Gate

If you are travelling from one of these stations and require a London-bound service, you can either use London Buses to help you complete your journey, or travel to Crystal Palace and change there for a service towards London Bridge.

Journeys will take around 20-30 minutes longer than usual so please allow extra time.

Tickets will be accepted for no extra cost on the following:

• London Buses between Croydon, Sydenham, Crystal Palace, Forest Hill, Honor Oak Park, Brockley, New Cross Gate and London Bridge
• Southern and Thameslink services on any reasonable route including from nearby alternative stations

Planning your journey:

Live departure boards can be found here.

You can view a live map of the network here, and you can also see an alternative route guide here.

If you're travelling in the London area, you can plan journeys on alternative routes by using the TfL Journey Planner here. You can also use our app to find up-to-date information.

Can you tell me more about the incident?

Unfortunately, Southern / Thameslink have been advised of a problem with the electrical supply to the trains in the Forest Hill area. This means that some services have to run using alternative lines through the area until the power has been restored.

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

London Overground customer advice:

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

• Local buses via any reasonable route

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.