A fault with the signalling system between Doncaster and Newark Northgate means trains have to run at reduced speeds on some lines.
Trains running between these stations may be cancelled, revised or delayed by up to 25 minutes.
Disruption is expected until 19:30.
Check before you travel:
You can check your journey using the National Rail Enquiries real-time Journey Planner.
Compensation:
You may be entitled to compensation if you experience a delay in completing your journey today. Please keep your train ticket and make a note of your journey, as both will be required to support any claim.