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Major disruption between Stevenage and London expected until 14:00 

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Service alteration details

Incident reported: Saturday 01 August 2026 at 08:41

If you would like to follow this incident on X, please useStevenage

Last updated

Saturday 01 August 2026 at 11:33

Train operators affected

Route(s) affected

All Grand Central routes to / from London Kings Cross

Great Northern between Kings Lynn / Ely / Cambridge / Peterborough / Letchworth Garden City and London Kings Cross, and also between Stevenage / Welwyn Garden City and Moorgate

All Hull Trains routes to / from London Kings Cross

All LNER routes to / from London Kings Cross

All Lumo routes to / from London Kings Cross

Thameslink between Cambridge and Brighton, and also between Peterborough and Horsham

Description

A person has been hit by a train between Stevenage and Moorgate / London Kings Cross / London St Pancras International via Potters Bar. Whilst the emergency services carry out their work, all lines between these stations are closed. Trains running between these stations may be cancelled, delayed by up to 60 minutes, revised or diverted via Hertford North.

If you've been affected by what happened on the network today, there is always someone to talk to. You can contact the Samaritans on 116 123 from any phone for a confidential chat.

Major disruption is expected until 14:00.

A visual disruption map video is available.

Great Northern and Thameslink customer advice:

Services are disrupted between Stevenage and London Kings Cross via Welwyn Garden City.

If you do not need to travel now, you are advised to delay your travel and travel later today.

If you do choose to travel now, your journey will take an extra 60 minutes and you will need to use alternate transport.

Service amendments:

No trains are calling at Alexandra Palace in either direction.

  • Thameslink services between Peterborough and Horsham disrupted, and may only run Peterborough and London Bridge only

  • Southern Services between London Victoria and Horsham will stop additionally at Ifield and Littlehaven hourly in both directions

  • Thameslink services between Cambridge and Brighton will run between Cambridge and London Bridge only

  • Thameslink services between Welwyn Garden City and Sevenoaks will run only between London Blackfriars and and Sevenoaks

  • Great Northern services between Cambridge and London Kings Cross will only run between Cambridge and Welwyn Garden City

  • Great Northern services between Welwyn Garden City and Moorgate are disrupted

  • Thameslink services between Bedford and Three Bridges will call additionally at Merstham and Coulsdon South

There may also be short notice amendments to the service so please continue to check for further information before travelling. You can speak to station staff or check station information screens for more information.

Ticket acceptance:

You may use these services at no extra cost:

  • Greater Anglia between Cambridge / Hertford East and London Liverpool Street

  • London Buses between Crews Hill / Potters Bar and London Kings Cross

  • London Underground on any reasonable route between London Terminals

  • London Overground between Enfield Chase and London Liverpool Street

  • Thameslink and Great Northern services across the network


Arriva Buses:

  • 100 / 101 – Between Luton, Luton Airport, Stevenage and Hitchin

  • 301 – Between Stevenage, Knebworth, Welwyn North, Welwyn Garden City, Hatfield, and St Albans

  • 302 – Between Welwyn Garden City, Hatfield, and St Albans City

  • 724 – Between Hertford East, Hertford North, Welwyn Garden City, Hatfield, and St Albans

Uno Buses:

  • 601 – Between Welwyn Garden City and Radlett (for Hatfield and St Albans City)

  • 602 – Between Hatfield, St Albans City, and Radlett

  • 653 – Between Welwyn Garden City, Hatfield and St Albans City

  • 610 – Between Potters Bar, Brookmans Park, Welham Green, Hatfield, Harpenden and Luton

You can use the above bus routes to travel across to use other Thameslink services towards London.

Directional advice:

If you are in the London area and wish to travel towards Cambridge, you can use the London Underground to London Liverpool Street where you can use a Greater Anglia service towards Cambridge.

If you are in the Welwyn area, Knebworth or Hatfield surroundings, you can use local buses (full routes above) across to St Albans / Radlett and then catch a Thameslink service towards London.

London Buses will assist your journey to / from Alexandra Palace.

Planning your journey:

You can see live maps of the networks:

These maps will now show where your journey is likely to be delayed.

You can also use the Great Northern or Thameslink apps to get more information about your journey.

Hull Trains customer advice:

Hull Trains service will now be able to divert via an alternative route between Stevenage and London Kings Cross with delay.

You can use your ticket at no extra cost on the following services:

  • Avanti West Coast between Manchester Piccadilly and London Euston

  • East Midlands Railway between Sheffield and London St Pancras International

  • Northern between Sheffield and Doncaster / Hull

  • TransPennine Express between Doncaster and Sheffield, and between Manchester Piccadilly / Selby and Hull

Please be aware that the other operators’ services are also likely to be busy.

LNER customer advice:

Rail replacement is in place as follows. These are operated by Wormalls Coaches. Your ticket can be used on these at no additional cost:

  • X2 vehicles at 13:15 - from Newark Northgate to Lincoln Central (X1 57 seater, and X1 53 seater)

  • X2 vehicles at 14:00 - from Lincoln Central to Newark Northgate (X1 57 seater, and X1 53 seater)

You may use your ticket, at no extra cost on the following services:

  • Avanti West Coast between Glasgow Central / Edinburgh / Manchester Piccadilly and London Euston

  • CrossCountry between Edinburgh / Newcastle and York, Leeds / Doncaster / Sheffield

  • East Midlands Railway between Sheffield / Leicester and London St Pancras International

  • East Midlands Railway between Lincoln / Newark Castle and Nottingham

  • Grand Central between Peterborough and London Kings Cross

  • Great Northern and Thameslink between Peterborough / Stevenage and London Kings Cross

  • Greater Anglia between Peterborough / Stevenage and London Liverpool Street

  • Lumo between Edinrbugh and London Kings Cross

  • Northern between Carlisle and Newcastle

  • TransPennine Express between Newcastle / York / Leeds and Manchester stations

Please be aware that other operators’ services are also likely to be busy.

Please see the alternative route map for more details.

Lumo customer advice:

You can use your ticket at no extra cost on the following services in both directions:

  • Avanti West Coast between Edinburgh and London Euston, and also between Manchester Piccadilly and London Euston

  • East Midlands Railway services between Sheffield and London St Pancras International

  • LNER services between Edinburgh and York / Doncaster via Newcastle - please note, trains on this route may be also affected by this disruption

  • TransPennine Express services between Edinburgh, Newcastle, York and Manchester Piccadilly, and also between Doncaster and Sheffield

Please be aware that the other operators’ services are also likely to be busy.

Check before you travel:

You can check your journey using the National Rail Enquiries real-time Journey Planner.

For helpful advice if you need to travel on a rail replacement service, including accessibility and bicycle information, please use our Rail Replacement Services page.

You can find the pick-up and drop-off location of rail replacement services by checking station signage or by searching for your station on our Find a Station page.

Please be advised that replacement vehicles may be busier than usual, and you should allow extra time for your journey.

Compensation:

You may be entitled to compensation if you experience a delay in completing your journey today. Please keep your train ticket and make a note of your journey, as both will be required to support any claim.

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