Rail passengers have been warned of severe disruption across parts of London and the south east of England.
Urgent repairs to a track in south-east London have led to delays and cancellations to Southeastern trains in and out of Charing Cross.
Some services have been diverted to London Victoria.
Trains to and from Euston are also facing disruption after a woman was hit by a train in north-west London. She has been taken to hospital.
Southeastern said the number of trains running to and from Charing Cross would be "severely restricted" all day. Full details are available on the company's website.
Services were suspended at Euston while emergency services treated the woman, who was injured at Headstone Lane station, Harrow. The incident is not being treated as suspicious, police said.
⚠️Due to emergency services dealing with an incident, the line between London Euston and Watford Junction is currently blocked. Please keep up to date with live information here - https://t.co/wxjls1NHVQ— Avanti West Coast (@AvantiWestCoast) October 19, 2021
Avanti West Coast said lines had reopened but services may be cancelled or delayed throughout the afternoon.
- Some Metro services are cancelled
- Trains between Dover Priory, Ramsgate, Ashford International and Charing Cross are being diverted to Victoria
- Most trains between Tunbridge Wells and Charing Cross are cancelled
- Trains that run between Hastings and Charing Cross will make additional stops
- Some off-peak services have been cancelled and others diverted to London Cannon Street station
Network Rail tweeted that a set of points had cracked in the New Cross area.
"We have engineers on site and they will be able to fix most of the problem this afternoon, but will need to go back in overnight to complete the job, when trains aren't running and we cause the least disruption," the company said.
Thameslink said it expected its services between Rainham and Luton to be busier than usual due to the Southeastern disruption.