I migrated over to sky broadband last week as part of our digital tv package deal we just bought from them. As the telephone exchange is about 5 mins walk away im currently getting my full 16mb usage, downloading at around 1.5mbps
Can't fault it so far, its excellent

Although was pretty peeved when they were due to install the dish last week for the tv, and was told he coulden't because they had to put the dish higher up so health and safety dictates that it requires 2 people. so stuck with vm for another 2 weeks now