(I have no affiliation with etc etc .. only commercial interest is if you are thinking of switching, let me recommend you and I will get a discount off my next bill) ..
After a bit of to-and-fro with Virgin Media, and a few days of suffering dropouts every couple of hours, I have a new Superhub 3 installed and the latest broadband package - at 20 quid a month less than I was paying ..
I ran Speedtest ..