Mayor targets London's mobile phone 'dead zones' after survey

On 15 October 2026 the Mayor of London published both a press release and an interactive map identifying mobile phone signal 'dead zones' across the capital, with the story still prominent on 17 October via Time Out and the City Hall site. Eversholt Street in Camden, Dalston and Brick Lane rank as the worst-performing streets, while Fleet Street, Stratford and Cheapside top the list for signal strength. The data shows a 'doughnut hole' of weak coverage in inner north and east London — Camden, Islington, Hackney and Tower Hamlets — while the City of London, Chelsea, Newham, Lambeth, and Hammersmith and Fulham all score strongly. Download and upload speeds mostly beat regulatory minimums, but latency is the main problem across all 19 neighbourhoods surveyed, and 5G is unevenly deployed. The connectivity map was built from four anonymised networks tested during the Christmas shopping peak and merged with crowdsourced Speedtest data from Ookla; the Mayor is now using it to push mobile operators to upgrade infrastructure.