The crash between two East Midlands Railway trains on Friday was shocking not only for the large number of casualties but also for its nature and circumstances – occurring on an upgraded main railway line with new trains, modern signalling and none of the apparent external factors such as extreme weather or leaf fall that have contributed to recent notable accidents.
Specialist investigators from the Rail Accident Investigation Branch and British Transport Police are yet to release any details and have cautioned against speculation.
Network Rail has said the “current indications are that this was a tragic, isolated incident”. Whether that statement means a specific factor has emerged, or simply reflects the rarity of such a terrible event, is unclear.
Investigators will be examining what could have allowed the collision given the multiple failsafes in modern signalling and trains.
Why did the first train stop?
The southbound East Midlands Railway (EMR) train from Nottingham to London St Pancras came to a halt on the track just south of Bedford. According to unverified reports in the Telegraph, the driver may have made a stop to report a fault with the automatic warning system, linking the train to the signalling. The train was a brand-new Aurora class 810 model built by Hitachi, brought into service within the last six months on EMR.
Why did the second train fail to stop?
The EMR Luton airport express from Corby had stopped at Bedford and switched to the fast track, and collided with the Nottingham-London train a couple of miles south of the station at Elstow. A functioning signalling system would normally display a red signal when a train was stopped in front. If a driver fails to spot the red light – a signal passed at danger – automatic train protection systems should apply the brakes. Images from the crash suggest the train was not going anywhere near full speed.
What was the context of the crash?
This is a heavily used part of the UK’s rail network, with Thameslink commuter trains running on the main line alongside EMR services. Years of work has taken place across the Midland mainline to upgrade and electrify the track for more capacity and faster services between St Pancras and the East Midlands. Only last year did Network Rail complete the work to allow the new Hitachi bimode trains to run at a higher top speed of 125mph south of Bedford to London.
Temperatures last Friday were hot but well below the mark where Network Rail limits train speeds in case direct sun causes rails to buckle – although such restrictions could follow in the later phases of the heatwave forecast for this week.
Are there now wider questions about safety?
The last crash in Britain where a passenger train hit the back of another service on the same line occurred in Clapham in 1988, killing 35 people. In the darkest times from then through the years immediately after privatisation, when Railtrack was in charge of failing infrastructure, the railway’s culture appeared to be a petri dish for disaster.
But renewed investment and a laser focus on health and safety helped Britain maintain a pre-eminent safety record in Europe: after 2007, no passenger died in a UK train accident for more than a decade.
In the last six years there have been four particularly serious accidents: in Stonehaven in Scotland, where three people died after a landslide sent a ScotRail train over an embankment; collisions between passenger trains in service at Salisbury in 2021, and in Talerddig, Powys, in 2024 where one person died; and now the Bedford crash.
