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Network benchmarking firm Opensignal, which uses crowdsourced speedtests from users of its apps and services, has examined the 15 most popular start-up hubs in Europe and warned that the leading city – London – still has a major weakness when it comes to the performance of local mobile connectivity (4G and 5G).
According to DEEP Ecosystems’ Start Up Heatmap Europe 2025 study, London currently ranks top of the table – – putting the United Kingdom’s capital city ahead of rival giants like Berlin, Paris, Amsterdam, Munich, Barcelona, Zurich, Madrid, Vienna and Copenhagen.
However, Opensignal notes that while London is the most popular European city for start-up hubs, people shouldn’t expect a good mobile experience while they’re there. “Londoners have the slowest speeds and the worst experience when using over-the-top voice apps,” said the firm.
For example, London had one of the lowest rankings for video streaming experience (68.1 out of 100) and it came bottom for voice app experience (77.1 out of 100). On top of that, London also delivered the slowest mobile broadband download speeds of 52.7Mbps and the slowest uploads at 9.8Mbps.
