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.
A limited service is operating via an alternative route avoiding the affected area.
Replacement road services are also in operation between Peterborough and Newark, and passengers are also able to use alternative routes via Manchester and Leeds to travel to and from the North East.
MPs travelling from the North East to London to get back to parliament have been stuck on trains with thousands of other passengers due to problems with cables on the east coast line.
Newcastle Central MP Chi Onwurah tweeted:
train 2 hrs late because of cables coming down but another signal failure means they now can't give an arrival time
Gateshead MP Ian Mearns also tweeted:
Other colleagues stuck at Retford for 4 and a half hours! Still there!
Thousands of passengers have been stuck in delays on the East Coast mainline today, due to problems with cables.
Among them were several MPs travelling from the North East to London to get back to parliament.
An 11 year old boy has been airlifted to hospital with life threatening injuries following a collision on the A69 between Greenhead and Haltwhistle. A Range Rover left the road and crashed onto the railway line. It received a glancing blow from a passing freight train.
The train stopped further down the line and there are no reported injuries from those on board the train. Police believe there was a second car involved and they are treating it as a crime scene.
A freight train driver was hit with a stone thrown through his window as he pulled out of Tyne Dock in South Shields.
The incident happened at around 5.55pm on Monday, October 8
PC Nick Cannon, from the British Transport Police, said: "The freight train was approaching Green Lane Bridge when the driver saw pedal cycles lying at the side of the tracks.
"A stone was then thrown at the train from the undergrowth at the side of the tracks.
"It flew through the open window."
When the trains was checked, a rear train light had been stolen.
Anyone with any information about the incident that could assist police enquiries should contact BTP in strict confidence on 0800 40 50 40 quoting 473 of 8 October 2012, **or Crimestoppers anonymously on 0800 555 111.
Police are appealing for witnesses after a group of youths threw bricks at a train as it left Seaham Station.
The incidented happened on Saturday June 23rd at the level crossing just outside the station as the 2.18pm train set off for Hexham.
British Transport Police say a group of youths threw objects at the train from a wooded area close to the station.
The driver's front cabin window cracked which meant the train had to be taken out of service when it reached Newcastle.
Anybody with any information about the bricks being thrown is asked to contact British Transport Police on Freefone 0800 40 50 40 quoting reference B11/NEA of 16/07/2012. Or you can call Crimestoppers anonymously on 0800 555 111.