I am another happy 2mb Pipex customer. As I work in IT I did a a lot of research and although they are a tad more expensive, the tech support is great.I have only had to call 3 times in 3 years and was dealt with in a professional manner, in fact if they have network issues they put that info on the recorded message when you connect so you dont have to wait to speak to someone. Additionaly if you can get to another pc and go to the website and disruption is posted.
I understand that their call center/office is around North London or Watford.
cheers