Last updated:Today at 22:06
Train companies affected:Greater Anglia
Last updated:Today at 21:34
Train companies affected:CrossCountry, Great Northern, Greater Anglia, Thameslink
Last updated:Today at 20:59
Train companies affected:National Rail
Incident reported: Thursday 10 July 2025 at 13:10
If you would like to follow this incident on X, please useCambridge
Last updated
Thursday 10 July 2025 at 21:34
Train operators affected
CrossCountry services between Birmingham New Street and Stansted Airport
Great Northern services between Cambridge / Ely / Kings Lynn and London Kings Cross
Greater Anglia services between Cambridge and Ipswich, between Norwich and Stansted Airport, also between Cambridge North and London Liverpool Street
Thameslink services between Cambridge and Brighton
Lines have reopened following a fault with the signalling system at Cambridge. Trains will still be cancelled, severely delayed by up to 60 minutes or revised for the remainder of the day.
You can use your ticket on the following services at no extra cost:
Avanti West Coast between Birmingham New Street and London Euston
Greater Anglia between Stansted Airport and London Liverpool Street
London Underground between London Euston and London Liverpool Street
Thameslink between Peterborough and London St Pancras International
If the train you were due to travel on is cancelled, you may use your existing ticket, at no extra cost, on the two CrossCountry services operating before or after your cancelled service.
If you decide to travel from a different station due to this disruption, and need to return to that station later, you will also be able to use your existing ticket to do this, at no extra cost.
Any seat reservations will not be carried over to another train, but coaches B, H and L are the unreserved coaches on CrossCountry services (where available), so you are advised to head to them.
Some trains which run between Royston and Cambridge can now run as booked on this route.
Teams are working to return to the scheduled timetable, but please continue to check journey planners and station information boards before you travel. Trains in the area will still be significantly disrupted until the end of the day, and your journey may still take up to 40 minutes longer than usual.
Our first expected train to run through the area will be the 20:27 Great Northern service from London Kings Cross to Cambridge.
Thameslink services between Brighton and Cambridge:
These trains have been suspended in both directions.
No Thameslink trains can run between Royston and Cambridge.
Great Northern services between London King's Cross and Cambridge:
These trains are substantially disrupted, with trains only able to run as far as Royston. We now expect the first train to run between Royston and Cambridge will depart Royston at 21:33, and arrive in Cambridge at 21:53
Great Northern services between London King's Cross and Ely / King's Lynn:
A limited shuttle service as been running between Cambridge and King's Lynn.
You may still use your ticket at no extra cost on the following:
South of London:
Southern or Thameslink services on any reasonable route
Southeastern services on routes between Gillingham, Bromley South, and London Victoria, and also between Rainham and London Bridge (not including high-speed services)
Metrobus services between Gatwick Airport, Horley, Salfords, Earlswood and Redhill, and also between Gatwick, Three Bridges, and Horsham, including Ifield and Littlehaven
London Buses between Redhill, Merstham, Coulsdon South, Purley and the Croydon area, including Route 405
Across London:
London Underground on any reasonable route across London, including transfers between London terminals
London Buses on routes between:
the Sutton or Wimbledon areas and Central London
Croydon and Central London
London Bridge area, Blackfriars, St Pancras and Finsbury Park
Elizabeth line services between Abbey Wood and Farringdon
North of London
Great Northern services between London King's Cross, Finsbury Park, Stevenage and Cambridge
LNER services between London King's Cross, Stevenage and Peterborough
Greater Anglia services between London Liverpool Street, Cambridge, and Ely, and also between Peterborough and Ely
East Midlands Railway between Peterborough and Ely
Cross Country services between Peterborough, Ely, and Cambridge
Arriva Buses on routes:
98 between Hitchin and Baldock
97 between Hitchin and Letchworth
55 between Stevenage and Letchworth
301 between St Albans and Stevenage via Hatfield, Welwyn Garden City and Knebworth
Uno Buses on routes:
635 between Hatfield and Hitchin (operates Monday-Friday)
601 between Welwyn Garden City and Radlett (for Hatfield and St Albans City)
602 between Hatfield, St Albans, and Radlett
653 between St Albans, Hatfield, and Welwyn Garden City
Replacement buses:
A limited number of rail replacement buses are running between Royston and Cambridge. These are running on an ad-hoc basis, so please speak to station staff for more information.
Planning your journey:
You can check train departures from your station here:
You can view live maps of the network here:
You can see alternative route guides here:
If you're travelling in the London area, you can plan journeys on alternative routes by using the TfL Journey Planner.
You can also use the Great Northern and Thameslink apps to find up-to-date information.
Some London Liverpool Street to Cambridge North services may terminate / start at Audley End.
A rail replacement bus shuttle is in operation between Audley End and Cambridge until further notice.
Norwich to Stansted Airport services will terminate / start at Cambridge.
Passengers for Stansted Airport may travel on the rail replacement bus service to Audley End, change at Audley End for a train to Bishops Stortford and at Bishops Stortford travel on a Stansted Express service to Stansted Airport.
London Liverpool Street to Hertford East services have also been disrupted.
Alternative travel options:
Greater Anglia tickets are being accepted on the following alternative routes:
Great Northern between London Kings Cross and Cambridge
Thameslink between London St Pancras International and Cambridge
London Underground via any reasonable route
Advance purchase tickets holders will be allowed to travel on earlier or later trains if their booked service is cancelled.
Check your next train and alternative options using the new live map.
Local staff and Network Rail are working to deal with a track circuit issue at a junction near Cambridge Station. Track circuits detect and monitor the passage of trains, as part of the signalling system. In this case, the type of failure means that further trains cannot proceed through the area as normal.
Response staff are on site and working to fix the fault. With the current hot temperatures it is proving difficult to repair the damage until the temperature cools down.
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 set-down 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.
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.