If you take up the house move with Plusnet, unless you pay for the move, you will be locked in to a new contract with Plusnet.
I'm finding AAISP is everything promised.
There's a number of sad tales on the Plusnet community forums where people have been left with no connection for an extended period.
Have you read http://forums.thinkbroadband.com/plusnet/t/4518007-w...
AAISP November 2016
(Previous ISP Plusnet November 2001 to October 2016)
Telephone rental: Pulse8