TransPennine Express said it was "extremely sorry" for its service disruption as dozens more trains were cancelled today.
The train operator cancelled over 100 trains yesterday and issued a warning to customers to seek alternative transport. And TransPennine Express confirmed more than 70 trains had been cancelled today, Thursday, December 22 - and 30 others would be running a reduced service.
Kathryn O'Brien, customer service and operations director for the train operator, said yesterday's issues related to a "significant rostering system issue". She added: "We are working hard internally and with our system provider to resolve the situation as soon as possible."