Due to storm damage, no East Coast trains are running in or out of London King’s Cross station. There are no services running south of Peterborough and all other East Coast southbound trains are terminating early.
As a result, many trains are subject to short term cancellation and delays, and currently, there is no firm indication when services will be resumed.
Other train companies including Virgin, East Midlands and Chiltern are also experiencing severe disruption.
The storm damage has resulted in multiple incidents involving overhead power lines, with many fallen trees and debris across the line – and the heavy rain has flooded track in places, causing problems to signalling.
Network Rail says they are working hard to clear the debris from the track and to resolve other issues, but it is likely the work will take much of the day.
Fewer than half the trains ran on time on some main line routes in the last 12 months, according to official figures.
Virgin Trains was only able to operate 48.9% of trains on time on the West Coast main line in the 12 months ending April 27 2013 while the CrossCountry company only managed a figure of 46.1%.
The statistics from Network Rail (NR) were based on "right time" performances in which trains are only regarded as being punctual if they arrive within 59 seconds of the timetabled time.
Under the 59-second rule, the NR table showed 68.0% of trains nationally were on time in the 12-month period ending April 27 this year.
Train companies below the average figure included Southern (55.5% punctuality), First ScotRail (59.8%) ,East Coast (60.9%) and First TransPennine Express (63.8%).
Best-performing company was London Overground (86.8%) followed by Chiltern (86.5%).
NR also released regional figures for the four-week period ending April 27 based on the 59-second rule.
Overall, 72.3% of trains ran on time during this period, although long-distance operators only managed a figure of 58.0%.
NR also announced today the latest monthly punctuality figures based on commuter trains arriving within five minutes of the scheduled time and long-distance services arriving within 10 minutes of the scheduled time.
These are the figures on which rail regulators judge NR's performance and they showed that nationally in the period from April 28 to May 25 this year, 93.5% of trains were on time.
This compared with a figure of 92.3% for the same period last year.
Virgin Trains (85.7%), London Midland (89.2%) and East Coast (89.4%), were the only companies to fall beneath 90%, with the London to Tilbury and Southend company c2c being the best-performing company, with a figure of 98.2%.
NR said infrastructure, overhead line and signalling equipment problems caused the majority of delays on the West Coast Main Line during the period, thus impacting upon Virgin's punctuality.
It added that a series of measures to address performance on the southern end of the West Coast route would be announced in the next few weeks.