Crap and has been that way for the last few years, binned then last October after getting fed up with there scripted bull, everything ends with but you will not get these speeds anywhere else , even if you are complaining that you never get the speed its throttled to high heaven and the latency is a joke. try talking to them like you have a more than basic understanding of the workings of the net(nerd speak)and they go to bits.
One cheeky tit told me to email in after they had charged me for an upgrade they had given me and I had the paperwork to prove it, guess what they don't have an email contact only live chat or phone, that was it in the bin they went.
Just cancelled it for my mum yesterday, didn't even try and defend there service when I got the follow up call , just admitted they had on going problems in the l4 area and had done for a long time, I had been told month after month it was getting fixed never is, just same [Poor language removed] test your speed, yep , here we go again.
Actually feel a bit sorry for the some of there staff when you get through to the uk as they seem as if they have given up trying to defend it, shame as they were really decent for a long time,