For some reason moving from Sky LLU seems to be problematic. I spoke to a reseller for TalkTalk Business recently and I would have to be ported back onto ADSL, wait the 10 days before they can then push me back to fibre.
So if I do move from Sky it will be a new line as I work from home and can't afford 3 weeks without "proper" internet!
plusnet Unlimited Fibre (FTTC) > Sky Fibre Pro Unlimited. 15ms Ping, Sync ~ 68.93/18.83Mbps