Or just don't go for LLU for phone service, just broadband.
Yep - I've learnt the hard way.
It does limit ones options a bit though, which hinders competition. But above all else it's just plain deceptive to tell customers wanting to leave that they will lose their telephone number, probably as some devious retention tactic.
Competition in telecoms is a bit of a joke - there is competition and I actually believe we get a pretty good deal in the UK despite what the press often reports, but theres also alot of monopolistic behaviour and misselling from all the big providors.
I think that what needs to be done is something similar to railways - a non profit single nationalised network, with providers selling services on it. I suppose Openreach is meant to be something like that, but it clearly isn't. The LLU providers have spent billions, trying to compete with BT - as soon as they become real competition, BT lays fibre and we're back to square one. Are the LLU providers expected to now install 10's of thousands of their own street cabinets to compete? Not going to happen, so countless billions wasted on duplicated tech, which could probably have been spent on providing FTTP for all.