London Underground passengers are facing 'sauna-like' conditions as temperatures within the network have been recorded at 34C - a level that exceeds the UK's maximum limit for transporting livestock, currently set at 30C. The sweltering heat is being felt most acutely on deep-level lines such as the Victoria and Bakerloo, with many commuters resorting to using personal fans or changing clothes as soon as they reach their destination.
Baristas stationed near Underground barriers have witnessed individuals faint due to the oppressive warmth, highlighting the immediate health risks posed by these conditions. 'It's like a sauna in here,' said one commuter on the Bakerloo line. Asher Minns, Executive Director of the Tyndall Centre for Climate Change Research, explained that the Tube tunnels act as 'radiators', absorbing heat from the surrounding clay and concrete, which is compounded by the significant heat generated by trains during braking.
The problem worsens during external heatwaves, trapping and amplifying warmth underground. Minns noted that adapting the network's aged infrastructure and its clay surroundings presents considerable challenges, suggesting that widespread improvements could be years away. In the interim, he advocates for a focus on immediate passenger safety, proposing measures such as limiting passenger numbers during peak heat or reducing train services.
Nick Dent, TfL’s Director of Customer Operations, acknowledged the increasing frequency of hotter summers and stated that TfL is investing in network resilience and comfort. This includes the introduction of new air-conditioned trains on lines such as the Piccadilly and DLR. However, Dent also indicated that fluctuating funding has necessitated careful prioritisation of these investments.
The disparity between the conditions endured by human commuters and the legal protections afforded to animals has prompted calls for more urgent and comprehensive solutions. While new air-conditioned trains offer some relief on certain lines, the older, deeper parts of the network remain a significant concern for passenger comfort and safety.