in Ebbsfleet in Kent anyway..
BT are trialling fibre to the home, and will be offering 100Mbit (not 100MByte as the Grauniad said) for £44.95 wholesale. Apparently, the current markup for ADSL is 30%, which translates to a price of around £60 per month retail.
Various speeds will be available. Speeds below 10Mbit will be "assured" rather than "up to", and speeds above 10Mbit will be "up to".
More info at
http://www.openreach.co.uk/orpg/pric...g_Jan_2008.pdf