They appear to be building their own cable network (seemingly Scotland only atm), where they can offer 30 meg (remember if it's not supplying analogue TV, Virgin's network can, in theory, go over 50).
In other areas, they are looking at offering a LLU ADSL2+ service at 20 meg.
http://www.smallworldmedia.com/defau...and&pa=2&pb=19