Buses Replace Late-Night Trains on Fen Line: Important Details for Cambridge and King’s Lynn Travellers

Published on September 19, 2025

To mend tracks on the Fen Line between Cambridge and King’s Lynn from late September to early October, Network Rail will be undertaking routine engineering works. According to the official reports released by this prominent the rail infrastructure managing company, the sections of this track have become uneven due to the driest spring in the last fifty years. As the uneven tracks have become a safety concern, the engineers will work on the late-night trains. These works, alongside the other track works, may lead to replacements of the late-night train shifts by buses. Therefore, travellers have the freedom to direct and forecast their journeys with no interruption.

The Impact of Dry Weather on Track Conditions

Network Rail’s decision to carry out late-night engineering work stems from the impact of prolonged dry weather this year. The Fen Line, which runs through areas of peat soil, has seen the track become uneven due to shrinkage caused by the dry spring and summer. The shrinkage of the peat soil has led to the track dropping in places, which could affect the safety and reliability of services if left unaddressed. Although the ground will eventually stabilise with more rainfall, immediate repairs are necessary to prevent speed restrictions and further disruption to passengers.

Network Rail is using tamping machines, which are designed to lift the track and push ballast underneath, stabilising the ground to create a solid foundation. In addition, over 600 tonnes of ballast have already been added to areas of the track in an effort to raise the level and improve overall safety. This follows an extensive effort to treat approximately 9km of track across the Fen Line this year, which includes preventative measures taken over the last two years to prepare for such dry spells.

Changes to Train Services: What Passengers Can Expect

Due to the ongoing track repairs, several changes will be made to the Fen Line services, particularly during late-night hours. From September 29 to October 2, trains will terminate earlier than usual, and buses will replace trains between Cambridge and Ely. A shuttle train service will operate between Ely and King’s Lynn. Passengers travelling during these times will need to account for these changes when planning their journeys.

For example, the last direct northbound train from London King’s Cross to King’s Lynn will depart at 21:39, while the last direct train from King’s Lynn to London King’s Cross will leave at 21:42. After these times, buses will take over, with the final service running from King’s Lynn to Ely, followed by a replacement bus to Cambridge. It is also important to note that passengers wishing to continue their journey towards London after the last train from Ely to London King’s Cross will need to board a bus after 22:48.

Continued Engineering Works in October

Engineering works on the Fen Line will continue into October, with further late-night disruptions expected from October 6 to 9 and October 20 to 24. During these periods, buses will replace trains between Ely and King’s Lynn after 21:45. As such, passengers should be prepared for earlier departures and check ahead to confirm their travel plans.

In addition to the weekday engineering works, vital maintenance is scheduled around Ely Junction during the weekends of October and November. Buses will replace trains during these periods, and passengers are advised to plan ahead and check for updates on possible disruptions to weekend services.

How These Works Affect Travel Plans

For travellers planning journeys between Cambridge, King’s Lynn, and other destinations on the Fen Line, these late-night disruptions may impact the timing and comfort of their travel. However, the essential nature of the engineering works ensures that train services will remain safe and reliable in the long term. Passengers are encouraged to check the official websites for updates on train times, ticket changes, and the availability of replacement buses.

For those planning to visit key destinations like Cambridge, Ely, and King’s Lynn, it is important to note that while buses will replace some trains, these alternative transportation options will still provide essential connections, ensuring minimal disruption to travel plans. For example, the historical city of Ely, known for its famous cathedral, remains accessible through shuttle bus services, allowing tourists to continue exploring the city without major changes to their plans.

Ensuring Safe and Reliable Travel for the Future

Network Rail’s ongoing work on the Fen Line will enhance the safety and reliability of train services in the long run. While some late-night travel disruptions are unavoidable due to essential track repairs, the company is taking significant steps to ensure that future journeys are smooth and uninterrupted. For both tourists and local commuters, this effort will result in improved conditions, reducing the risk of future delays and ensuring a more efficient rail system across East Anglia.

As for now, passengers are encouraged to keep up to date with the latest travel information from Network Rail and official train operators, such as Great Northern and Greater Anglia, to ensure their travel plans remain on track during these essential works.