Where available, I'm seeing voip users switching to cable (Virgin, is there any competition?) as they find it more stable than broadband.
According to point topic 'BT Wholesale’s broadband business is losing upwards of 290,000 lines, a fall of over 3% on the 8.2 million lines it was supplying at the end of September'
Full story here
http://point-topic.com/content/dslanalysis/bbanumsreces090112.htm