Delays of up to 40 minutes on East Coast between Edinburgh Waverley and Glasgow Central due to signalling problem at Motherwell.
Affecting all services through Motherwell.
There is currently no estimate for when a normal service will resume.
More top news
Police investigating an attempted dog theft in Dalton near Thirsk have issued an e-fit of one of the suspects.
People are setting their festive spending budgets higher in the NE than anywhere else in the country.
After a wet start to the Christmas week things will slowly improve.