http://www.speedtest.bbmax.co.uk/res...1835&v=5411395
Both of those are "acceptable" sites as far as I can see. Tested via my Windows 2003 box co-located in interXion, London.
Tested at home, on my VM 20mbit connection:
http://www.speedtest.bbmax.co.uk/res...2090&v=5411423 (10mbit)
Gee - I'm sure pleased I'm paying £36 for this 10mbit quality service. :|