Network Rail says a rail "defect" is causing delays because of emergency engineering work which is affecting trains on the east coast mainline between Doncaster and York.
– Network Rail spokeswoman
At the moment we are only able to accommodate two East Coast trains in each direction per hour. Cross Country services are unable to call at Doncaster. Hull Trains are running via Goole. Other services are subject to some delay as a result of this incident.
“Our engineers are on site and we will restore full services as quickly as possible. Passengers are advised to check their journey with National Rail Enquiries.”