re comment to guy
"I don't know Be Internet, but surely they use ADSL just like most other ISPs? Since current ADSL tech in the UK can only manage 8Mb/s how could you be getting 10Mb/s?
There are several possibilities here:
1. Be use newer ADSL tech than everybody else."
Most ADSL was just resold BT Wholesale Broadband until recently. Now ISP's can get their hardware into exchanges. BE broadband (and therefore O2) broadband requires that the BE routers etc are installed at your exchange and working up to 20mbps over copper if i'm not mistaken, otherwise you get good old bt wholesale 8mbps.