Severe disruption today for rail passengers in Grantham
Rail passengers in Grantham are facing delays today (Tuesday) due to a fault with the signalling system at Peterborough.
National Rail says "all lines are blocked" through Peterborough, thereby affecting the east coast main line.
CrossCountry, East Midlands Trains, Grand Central, Greater Anglia, Hull Trains and LNER services are being severely disrupted.
Services are either being cancelled or facing delays of up to an hour, says National Rail.
More as we have it.