London Mayor Sadiq Khan faces public criticism over London Underground air conditioning failures as temperatures in the capital rise toward 40C. The Evening Standard reports that the issue centres on the lack of newly introduced air-conditioned trains on the Underground since 2017. As hotter weather increases passenger discomfort, the reporting highlights that no new air conditioned trains have been brought into service for the network in the period referenced, leaving existing stock to cope with demand during peak summer conditions. The Yahoo! UK News piece covers the same subject, focusing on Khan “feeling the heat” as commuters experience problems tied to air conditioning performance during unusually high temperatures. Across the two accounts, the core points are that extreme temperatures are affecting journeys, passengers are reporting air-con failures or insufficient cooling, and concerns are linked to the absence of additional air-conditioned train introductions since 2017. Both sources frame the situation as an ongoing operational issue coming under greater scrutiny during a period of record-breaking heat.