Re: White mice running round a wheel
Yep; and around 10-15% of people may be connected to 20CN rather than 21CN.
However, while in a Market 1 exchange you may still have to rely on BT wholesale for the DSL link, that doesn't mean you can't go with some of these ISPs. You may be limited in terms of speed (especially on 20CN) and companies rely on the LLU offerings from C&W or TalkTalk are out, but you should still be able to find someone who can offer you a more customised service, even in Market 1, than if you simply take the BT option.