East Coast Trains are now reporting the line is clear between Doncaster and Grantham and trains are running normally.
4pm - A broken down train at Newark North Gate is causing disruption on the railway lines.
As a result, trains between Doncaster and Grantham may be delayed by up to 30 minutes.
The break down is mainly affecting trains travelling from Doncaster towards Grantham. There is no current estimate for when a normal service will resume.
To find out whether this will impact your journey and to get alternative options planned for you, please use the National Rail Enquiries real-time Journey Planner, or call TrainTracker on 0871 200 49 50.