UPDATE 17:30: Disruption caused by the fire has now ended, all trains are now not affected by this incident

UPDATE 16:10: All lines have now reopened – please see National Rail for any train-specific delays

UPDATE 15:00: Disruption now expected until 4 pm

UPDATE 11:30: Disruption expected until 15:00

UPDATE 09:45 – Great Northern says trains will not run between Stevenage and Gordon Hill until further notice due to cable damage. The mainline route via Welwyn Garden City is now open.

UPDATE 07:10 – Some lines have reopened, but Great Northern are still unable to run trains between Stevenage and Gordon Hill. Disruption is expected until 12 noon.

UPDATE 19:00 – LNER still advises not to travel today and delay travelling until the 10th October. Lumo has also now begun warning passengers not to travel

Click here to view a video of the fire brigade attending the site.

UPDATE 15:20: The fire has been extinguished – though the damage to infrastructure means all lines remain closed

The local fire service is attending a fire in Stevenage, and all lines are closed.

Network Rail says that the fire has started in the signalling cables next to the railway line.

London North Eastern Railway, Great Northern and Thameslink are all telling people not to travel.

Grand Central, Hull Trains and Lumo are all affected by the incident with a number of ticket acceptances in place with the likes of Northern, TransPennine Express, CrossCountry and Avanti West Coast.

Please see a full list of travel advice by clicking here.

Major disruption is expected until end of service today (09/10).

The fire brigade are dealing with an incident near the railway. To allow this to be done safely, trains have been stopped in the area. This can be necessary if the incident is too close to the track to allow services to pass, or if the fire brigade need access to the site via the track.

National Rail spokesperson