...I've just signed up for 2MB broadband with Plus.net at £14.99 per month with no download limit and a free modem!
I've just switched from V21's broadband which I would not recommend. V21 have pretty good online technical help, but once you're not a new member you no longer get 'benefits'. i.e. Even though the price for 512MB broadband went down a few months ago to £16.99, existing customers still pay £19.99 and would need to pay an extra £10 to pay a lower montly price.
Here's a comparision from ADSLGuide.org of Pipex and PlusNet click here