Engineering work is taking place between London Kings Cross and Potters Bar, closing some lines.
All weekend trains will be diverted via Hertford North extending journey times.
Saturday
The 09:55 Sunderland to London Kings Cross and the 1427 London kings Cross to Sunderland will not run.
Sunday
The 12:13 Sunderland to London Kings Cross and the 16:53 London Kings Cross to Sunderland will not run.
The 15:59 Bradford Interchange to London Kings Cross and the 18:53 London Kings Cross to Bradford interchange will not run.
Great Northern and Thameslink have yet to advise how they will be affected by these works.
Hull Trains have yet to advise how they will be affected by these works.
Saturday and Sunday
LNER will run three trains per hour from / to London Kings Cross via a diversionary route between London Kings Cross and Stevenage.
Northbound services will depart London Kings Cross approximately 15 minutes earlier than normal.
Saturday and Sunday
No trains from / to London Kings Cross.
Check before you travel:
If you are travelling with Grand Central, LNER or Lumo, you can plan your journey using the National Rail Enquiries Journey Planner
If you are travelling with Great Northern, Hull Trains or Thameslink, these changes have yet to be confirmed in online journey planners.
Replacement Bus Travel Advice:
For helpful advice if you need to travel on a rail replacement service, including accessibility and bicycle information, please use our Rail Replacement Services page.
You can find the pick-up and set-down location of rail replacement services by checking station signage or by searching for your station on our Find a Station page.
Please be advised that replacement vehicles may be busier than usual, and you should allow extra time for your journey.