Engineering work is taking place between Selby and Doncaster, closing some lines.
On Saturday and Sunday, trains will divert via Goole and will not call at Howden or Selby.
Also on Sunday, engineering work is taking place in the Stevenage area. Trains will be diverted via Hertford North extending journey times.
Check before you travel:
These changes are not currently shown in the National Rail Enquiries Journey Planner, please check back nearer to the time of travel.