In reply to:
and then I find that it's evening performance is 3 times times better than Talk Talk according to the survey
From my previous experience of TalkTalk, I would say that is about right. From 9am - 1am I couldn't even complete a speedtest here at ADSLguide. Although I've had a couple of disconnections here in the last few day, the service I'm getting is still an awful lot better than the service from TalkTalk. So many website connections used to drop packets like a drunk postman, it made multiplayer java gaming an impossibility.
Since changing to Plusnet, I've rediscovered the web, great ping times, no lost packets and fantastic download speeds. The recent disconnections have been a bit of a disappointment but I haven't lost all hope in Plusnet yet.