Pooke, you can also follow developments over at click here.
Someone there has posted (on the last page of the above link), "Yesterday I read an article on TheRegister.co.uk that a new site Bethere.co.uk are releasing a 24meg connection for £20 a month (WOW) with an upload speed of 1meg this month (Actually starting today). From what I have read from them they will be no caps either way."
The actual bandwidth that you will receive is based on three factors: the length of the wire that connects your premise with the BT exchange, the quality of the copper, and signal interference from other users or devices. If the quality of the copper is perfect, and there is no line noise, you will receive 24 megs up to a kilometre from the exchange. If your line is two kilometers long then you can expect to receive up to 15 megs. Your bandwidth will decrease further as line length increases, and we do not offer our service if you are further than 5.5 kilometers from the exchange. While bandwidths are not guaranteed, we do offer the highest bandwidth available using ADSL to your premise."