I have a friend who recently joined UKonline for their 8Mb service.
From what I recall, the staff made several **** ups at first (didn't send the hardware out on tim, then when he pursued the problem, they gave him BS over the phone etc) however, when the equipment arrived all seemed fine.
To begin with he was getting speed of 400KB/s but after some routine changes in their network he was consistently getting 700+

also, he pins to my network at a nice 7-8ms