Re: Landline number
The irony is thanks to VoIP that you don't actually need to have a landline in order to have a UK landline number with a local area code - you can get a free one to ring on a mobile app or forward it for next to nothing. I could have easily ditched my landline when I had Virgin Media, in favour of a VoIP service, but didn't, because of outages - sometimes I needed to resort to dial-up! Despite having to pay for a BT landline that I rarely use for outbound calls, I've never had that experience with BT Broadband.
There was a bloke who got so fed up with getting unsolicited calls that he started giving out an 0871 number, meaning he was making £7 a month.