We go through a tiny exchange with few residential LLUs (CLWOO) so our ISP options are basically limited to BT, BT resellers and Sky. No fibre, just ADSL/ADSL Max. There are a few other LLUs (C&W, Edge, Pipex), but I don't think they do residential.
Currently we're struggling with a 20 GB download quota in our flatshare, so obviously we want to up that, preferably to unlimited, preferably no traffic shaping, a router which is not locked down, etc, etc.
We plan on keeping our telephone line with BT regardless.
Any suggestions on which ISPs we should look into?