London’s transport network buckled on Tuesday as temperatures rose to the hottest May day on record, leaving Tube passengers stuck in sauna-like conditions and facing severe delays on the Central and Jubilee lines. By Tuesday afternoon, the Underground had reached 34.3C on one platform at Oxford Circus, the hottest reading recorded across the network.
The heat was not confined to a single line. Outside, the mercury climbed to 35C in Kew Gardens, while trains and platforms across London were measured at temperatures high enough to make even short journeys punishing. Commuters on the Central Line in particular felt the strain as the network struggled to keep moving in the heat.
Tom Brown, who was commuting from the city on the Central Line during rush hour, said the conditions were unbearable. “It’s like a sauna down here. Every year it gets worse, I can’t understand why they haven’t sorted it yet,” he said. His complaint captured the anger of passengers who expected delays on a hot day, but not trains and platforms that felt almost as stifling as the street outside.
Transport for London said it is investing millions to keep the network resilient as hotter summers become more common. Nick Dent said the work includes new trains designed to meet rising passenger numbers and reduce the heat they generate, while more than 190 Tube trains already have air conditioning, covering 40 per cent of the Underground network. Air conditioning is also fitted on all London Overground and Elizabeth line trains, yet the District and Circle lines still recorded highs of 28.7C.
That gap between what has been installed and what passengers felt on Tuesday is the uncomfortable story of the day. Even with cooling systems on some lines and new trains promised on the Piccadilly line and the DLR, London’s oldest parts of the Tube remain the ones most likely to turn oppressive when the city heats up. TfL says it is looking at ways to roll out more innovative solutions, but no timetable has been given for relief on the hottest stretches of the network.
For passengers at Waterloo Station and across the Underground, the question is not whether the city will face more days like this. It already has. The real test is how fast the network can be adapted before the next record-breaking heat sends the same scenes back underground.
