if I were Mr Corbyn, I'd have these lousy mobile phone networks in my sights first. Expecting us to be grateful for charging stupid money for lousy coverage.
Damned O2 would be first for the high jump if I had my way.
If you left O2 to go to ANY other network you'd see a huge improvement, especially EE.
O2 has an obligation to provide 4G to more of the UK than any other network, in return for a cheaper license, and it's actually doing quite well but it won't happen overnight. However, EE is way out in front and has seen the commercial benefit of having the fastest 4G network.
Now Vodafone has started to roll out ultra fast 4G (nearly 200Mbps, which isn't bad for a mobile) and Three switched on its 800MHz 4G network in mid-September, which (subject to having a compatible device) nearly doubles its 4G coverage and now means indoor coverage that Three has never had in any of its 12 years of existence.
Suffice to say, the mobile industry is doing pretty well without any need for Government intervention/meddling.