"In the short-term we will be running fewer services, but still more than we did before the May timetable change. We will then get back to a full timetable service by the end of July."
David Brown, Managing Director, Northern said: “We have been experiencing some significant disruption to train services, especially around north Manchester, Bolton, Liverpool, Blackpool and up to the Lake District. I’d like to apologise for this unacceptable situation and for the disruption and inconvenience many passengers have faced. We’re truly sorry for this and are working hard to fix this."
On a number of these routes there will be alternative rail services available, as well as other modes of transport.
We want to know how it has affected the residents of Yorkshire this morning.
Have you been left stranded on a platform? Are you late for work? Maybe you've given up all together and found a new mode of transport or your local train station is chaotic?
Let us know how your morning commute has been affected on twitter, Facebook or by email.