London Underground - mobile 'phone coverage

[Oxonian]

This is a topic that recurs from time to time :-

Expanded mobile phone coverage goes live on Elizabeth line and Underground (ianvisits.co.uk)

https://www.ianvisits.co.uk/articles/expanded-mobile-phone-coverage-goes-live-on-elizabeth-line-and-...

4G Mobile Cover Extended to More of the UK London Underground - ISPreview UK

https://www.ispreview.co.uk/index.php/2024/05/4g-mobile-cover-extended-to-more-of-the-uk-london-unde...