The usual answer that will be thrown around to justify this is that London has the oldest underground metro system, whether that’s relevant or not. It doesn’t s

The usual answer that will be thrown around to justify this is that London has the oldest underground metro system, whether that’s relevant or not. It doesn’t seem very relevant when even the deepest stations in Prague (which are newer but much deeper than most of London) have later added 5G throughout tunnels with download speeds of ~200 Mbps between stations. I suspect the UK just doesn’t have modern standards for mobile internet service, as it isn’t limited to TfL services in London. There isn’t even reliable mobile coverage on stretches of the West Coast Main Line rail corridor in England, which is outdoors and connects the UK’s most populous cities. Much of London isn’t particularly reliable either on most mobile networks, in my experience. Meanwhile, in cities like Prague or Washington I can often get mobile download speeds outdoors of 400 Mbps - 1-2 Gbps.