Overspeeding at Grantham South Junction
- WireNews
- Dec 1
- 1 min read
Overspeeding incident at Grantham South Junction, Lincolnshire, 26 September 2025
At around 09:20 on 26 September 2025, train reporting number 1Y80, the 07:08 Middlesborough to London Kings Cross service, operated by London North Eastern Railway (LNER), was involved in an overspeeding incident at Grantham South Junction.
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The train was routed over diverging points with a permanent speed restriction of 25 mph (40 km/h). The associated signals displayed the expected indications; however, the train traversed the points at 56 mph (90 km/h). The permissible speed in this area for a train which remains on the main line is 115 mph (184 km/h).
This caused the train to lurch sideways and passengers on board reported to LNER through social media that they received minor injuries. Later, follow-up enquiries led to the seriousness of the event being understood.
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We have undertaken a preliminary examination and reviewed a similar incident at this location and two previous investigations into similar overspeeding events that occurred at Spital Junction, Peterborough on 17 April 2022 (report 06/2023) and 4 May 2023 (report 10/2024). As the previous investigations still have open recommendations, RAIB has decided to publish a safety digest for this incident.
The safety digest will be made available on our website in the next few weeks.
