This story suffers from bad reporting. What's actually going away is the legacy SS7/TDM signaling, known in the UK as C7, presumably in favor of SIP. The physical networks in the UK are a mix of fiber and copper, with a lot of FTTN with copper loops which is migrating at some rate to FTTP with fiber the whole way. PS: We can have a metaphysical discussion about what counts as a landline phone. I have fiber running into the house, which connects to a telco-provided battery-backed modem, which is connected to the copper wire in my house into which I plug a genuine American Bell Mickey Mouse phone. Is that a landline? Sure seems like it when the phone rings, and I mean *rings*.