Two train derailments have occurred within a 24-hour period in the United Kingdom, prompting concerns about the impact of extreme heat on rail infrastructure. Railway officials, however, maintain that the lines are safe and that robust safety measures are in place.
On Friday, a Greater Anglia train derailed near Wickford station in Essex. The incident, which occurred at approximately 2:12 p.m., involved the front coach leaving the tracks. No injuries were reported, and the train remained upright. Approximately 40 to 45 passengers were on board the service traveling from Southend to London Liverpool Street. Emergency services, including air ambulances, police, and firefighters, responded to the scene.
This derailment followed a similar incident on Thursday afternoon in Lewes, East Sussex, where a Southern Rail train experienced a derailment, causing three carriages to flip onto their side. Two passengers were transported to major trauma centers with severe injuries, and an additional 18 were treated in hospital. Approximately 45 people were on board that service.
British railway tracks are designed to withstand average summer temperatures of 27 degrees Celsius (80 degrees Fahrenheit). However, parts of the South-East of England have recently experienced temperatures exceeding 37 degrees Celsius (99 degrees Fahrenheit), with 38.1 degrees Celsius (100.6 degrees Fahrenheit) recorded in Kew Gardens, west London, marking the hottest day of the year. This period also represents the fifth heatwave of the summer, during which transportation infrastructure has struggled to cope.
John Whitehurst, chief executive of Greater Thameslink Railway, stated that derailments are incredibly rare and that the railway system is safe in hot weather. He assured that control processes, including inspections and temporary speed restrictions or service suspensions, are implemented when necessary. Martin Frobisher, a director at Network Rail, acknowledged that the hot weather has presented exceptional challenges and that investigations into the cause of the incidents will consider all possible factors.
However, concerns had been raised prior to the incidents. Lewes MP James MacCleary mentioned that he had discussed the track condition with rail bosses days before the Lewes derailment, noting that the line had become 'bumpier' in recent months, which he attributed to the hot weather. He also indicated that rail companies had reported that dry conditions were affecting embankments and track conditions, leading to numerous speed restrictions in the area. Investigations are underway to establish the cause of both derailments, with officials from the Rail Accident Investigation Bureau present at the scene.
The lines between Lewes and Haywards Heath, and between Wickford and Southend, are expected to remain closed for the foreseeable future.