other week with the company who want to start the service, but it's still in the early stages. Their main focus is providing broadband (wideband) to rural areas, so you COULD be in with a chance depending on where you live and how far they're planning to take the service.
Is that Invisible Networks? They are active in several areas of the country, including some of the bids in the EEDA (East of England Development Agency) competition for broadband projects. Google for the Demand Broadband website for more info.
For more info re your original question, the forums on Broadband Norfolk http://www.broadbandnorfolk.co.uk may help, even if you're not in Norfolk. They are a knowledgable bunch over there. Plus ADSL Guide, previously mentioned in the thread.
Syd