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    London’s heat-stricken underground commute threatens its appeal

    • July 26, 2025
    • admin

    As London grapples with intensifying heat waves and outdated transport infrastructure, its status as a leading global financial hub may be under quiet but growing pressure.

    Commuters working in the City of London, the capital’s core financial district, are facing increasingly unbearable conditions on the London Underground, particularly on the deep-level Central line, which lacks air conditioning and suffers from poor ventilation.

    The situation is exacerbated by a post-pandemic push by major financial institutions to bring employees back to the office.

    Banks such as Barclays Plc and Deutsche Bank AG now require staff to work in-office at least three days a week, while Man Group Plc has requested its quants return full time, driving up passenger numbers and intensifying the discomfort during peak commuting hours.

    Central line commute pushed to the brink

    Temperatures in the deepest parts of the Underground are regularly exceeding UK heat wave thresholds, creating harsh commuting conditions.

    Bloomberg’s London Tube Heat Index has tracked daily temperatures on the Central line from Bank to Bond Street stations — a core route connecting finance jobs to upscale residential neighborhoods.

    Since late June, data shows daily carriage temperatures regularly surpassing 31°C (88°F), with humidity levels around 40%, creating stuffy and oppressive travel conditions.

    During particularly intense heat waves this summer, temperatures inside carriages peaked at 34°C — up to 5°C hotter than above-ground readings.

    Even rainy weather has offered little reprieve: on one July day when surface temperatures were 23.6°C, underground readings still reached 29.3°C.

    The uncomfortable conditions aren’t just an inconvenience. Health experts warn that prolonged exposure to high temperatures, humidity, and poor ventilation can cause respiratory strain, fainting, and cardiovascular issues.

    “In the transport system… you cannot escape,” said Andreas Matzarakis, a professor of biometeorology, noting the added danger when people can’t cool down at night in homes without air conditioning — a common issue across London.

    Infrastructure struggles to adapt to a warming city

    The underlying issue lies in London’s aging transport infrastructure. Much of the deep Tube network was built by Victorian engineers, whose systems were designed for a very different climate.

    The Central line, in particular, is one of the oldest and deepest lines, with narrow tunnels and no existing capacity to support standard air conditioning units.

    London’s clay-based soil, which once helped regulate tunnel temperatures, has over time absorbed heat from trains, further warming the environment.

    Ventilation is poor, and without space to install heat-releasing systems, cooling efforts are technically complex and prohibitively expensive.

    While air-conditioned trains are coming to the Piccadilly line in 2025, funded through a £2.9 billion investment plan, there is currently no funding available for upgrades to lines like the Central line.

    Competitive edge at risk amid reluctant office returns

    The city’s overheated commutes are adding to post-pandemic reluctance to return to offices.

    Studies show that Londoners are already more hesitant to resume in-person work compared to peers in cities like Paris, Singapore, and New York.

    The strain of summer commuting may further erode the city’s appeal to global finance professionals.

    “If [London] becomes perceived as too risky, people won’t want to live and work here,” said Bob Ward of the London Climate Ready Partnership.

    Real estate agents have begun factoring cooler commutes into their sales pitches, while professionals like sustainability adviser Will Arnold now prioritize cycling proximity when choosing where to live.

    For a city whose economic success hinges on its ability to attract talent, London’s overheated infrastructure could pose a long-term risk.

    As Rob Johnson of the Centre for Cities warns, “If this carries on… London might lose its international competitive edge.”

    The post London’s heat-stricken underground commute threatens its appeal appeared first on Invezz


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      Popular Topics
      • Brazil Central Bank set to hold rates at 15% as inflation expectations edge lower
      • Trump calls Powell a ‘very good man’ after rare Fed visit, hints at rate cuts ahead
      • India plays it cool as US trade deal hangs in balance: what’s the strategy behind silence?
      • London’s heat-stricken underground commute threatens its appeal
      • Oppenheimer says Carvana stock remains underestimated: find out more

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