Rail passengers are facing long delays after Network Rail suspended services between Yorkshire and London.
There are no trains between Peterborough and Grantham because of overhead wire problems.
And it means people needing to travel to and from London have been told to use a Virgin Trains service between Euston and Manchester, and a First TransPennine Express or Northern Rail service between Manchester and Yorkshire.
Network Rail said the alternative route would add at least two hours onto the journey time.
And it said the disruption would continue for the rest of the day.
East Coast has urged people not to travel unless absolutely necessary, but said today’s tickets would remain valid tomorrow.