A train service operated by Southern derailed near Lewes on Thursday, with three carriages coming off the tracks and several people taken to hospital. British Transport Police declared a major incident as emergency crews worked to evacuate passengers and secure the scene.
What happened
The service, running from London Victoria to Eastbourne, was carrying about 150 people when the derailment occurred. Three carriages came to rest on their side and passengers were evacuated from the train. Reports from the scene and officials indicate that approximately 20 people were taken to hospital, while two were transferred to major trauma centres with what have been described as severe injuries.
Rail staff, police and investigators from the Rail Accident Investigation Branch (RAIB) and other specialist teams remained at the location on Friday as a formal investigation began and the local line was closed.
Operator response and safety assurances
John Whitehurst, chief executive of Greater Thameslink Railway, said the incident was "very serious" but stressed that such events are infrequently seen on the network. He underlined that the operator is cooperating with the RAIB and other authorities as they seek to establish the cause.
“A full investigation is now under way with the Rail Accident Investigation Branch … we’re working with them to ensure we can establish the cause but also support their investigation fully.”
Asked directly whether the railway is safe in hot weather, he told the Today programme that the system is safe and pointed to existing controls used to manage risk during high temperatures. These measures include inspections, temporary speed restrictions and, where necessary, suspending services.
Passenger accounts and immediate aftermath
Those on board described a frightening experience. One passenger told the BBC that the train began to move violently before the derailment, creating alarm among those on board. Another passenger who spoke publicly recounted feeling as though she might not survive as the train lurched and then toppled.
“The train just started jostling, kind of bumping up and down, and then jostling from side to side like a seesaw, and everyone was screaming.”
Emergency services and rail specialists continued clearance and assessment work in the hours after the incident, and infrastructure teams have assessed both the rolling stock and track before reopening can be considered.
Context and what to expect next
The RAIB leads formal investigations into serious rail accidents and will examine a range of potential factors, from track and signalling to rolling stock condition and operational procedures. The operator has stated it will support that investigation fully.
For passengers and the travelling public, the immediate implications are disruption on the affected route while investigators and engineers continue their work. Network closures or replacement services may remain in place until safety assessments are complete.
- Passengers on the service: around 150
- People taken to hospital: about 20
- Serious injuries: 2 people taken to major trauma centres
- Carriages derailed: 3, reported to be on their side
If you are due to travel in the area, check operators’ updates and plan for delays. The operator has emphasised that inspections and controls are in place to manage heat-related risks and that incidents of this type remain rare, but the formal RAIB inquiry will be key to establishing the precise cause.
| Issue | Known detail |
|---|---|
| Location | Near Lewes |
| Service | London Victoria to Eastbourne |
| Passengers on board | About 150 |
| Injured | About 20 to hospital; 2 with severe injuries |
Further updates will come from the RAIB, British Transport Police and the train operator as their enquiries progress. For now, travellers should expect disruption on the route while investigators and engineering teams complete their work.
