I take it that this is what Plusnet have tried to do, but for some reason it being fibre not adsl (god knows why) it cant get passed over. I have asked sky to put me on to adsl but their systems "were unavailable" at the time, so it could not be completed. I have to wait 48hrs for a callback. Things did get a bit heated and I said just cancel the whole line but even that takes 2 weeks.
Plusnet should have known better, it is not a secret that Sky use full LLU rather than a WLR product for the telephone service usually.
Plusnet were quick enough to take my money (£29.99) and I am surprised they did not know about this as well.
So now I have an account with both sky and Plusnet, seems Im stuck between a rock and a hard place.