Overhead line problems between Grantham and Peterborough are affecting East Coast services.
Passengers planning to travel through this section of the East Coast Main Line are urged to wait till tomorrow.
All East Coast tickets dated for travel today will be accepted tomorrow.
More top news
With a little help from Santa, the 5-year-old turned on Durham County Hall's christmas lights
Looking back on a turbulent year: Paul Brand and guests discuss Brexit, Trump - and hopes for 2017.
Rail fares in Britain are set to rise by 2.3% next year. Here is how the rise will affect commuters on routes across the country.