"builds on £41 million confirmed in the government's National Infrastructure Strategy to introduce low-earth-orbit satellite connectivity on all mainline trains, significantly improving both the availability and internet data connection speeds for Wi-Fi connected passengers."
WTF has Wi-Fi got to do with mobile signal - that is what this average commuter wants improving.
Some train companies do provide free Wi-Fi but it comes with strings attached (they require various details (obv. you may be able to lie about some info they request)) - and so is part of general personal details slurpage that seems to continue apace in the UK
My rule is, if I cannot get mobile signal on a train then I do not use the Wi-Fi, so not sure what level of data they want now (maybe a recent train Wi-Fi user will know if they have used OSA 2025 to try & slurp even more sensitive PII)
Obv my network provider has various PII related to me (as it is not a free service) but no reason (IMHO) for train Wi-Fi operator to have any PII.