Independent UK Internet Service Provider offers reviews, comparison of hundreds of broadband ISPs, daily news, complaints, articles, polls and discussion forums.

http://www.ispreview.co.uk/

Ofcom is the independent regulator of communications industry in the UK.

http://www.ofcom.org.uk/

If you ever wonder how broadband works and want to learn the basics, here are a couple of resources. The following is an article from BBC in it's "Ask Bruce" section

http://www.bbc.co.uk/webwise/askbruce/articles/connect/howwork_1.shtml

Howstuffworks is a useful resource if you want to know how things work. This page is a good resource on how WIMAX works.

http://computer.howstuffworks.com/wimax.htm

Speed test from ZDNet website.

http://resources.zdnet.co.uk/speedtest/

Broadband related news from The Register.

http://www.theregister.co.uk/comms/networks/

UK broadband news from Yahoo.

http://uk.news.yahoo.com/fc/broadband-adsl.html