Hi,
No problem. Just found another useful link - look who is bottom!!!
http://www.dslzoneuk.net/isp_speed.php?test=8128&month=12&year=2006&submit=View+average+speeds%21
Oh well only 6 more days 'til I can wave goodbye to them :-)
I think that graphs like that don't tell the whole story though - it does not tell you anything about the ISP's policies on throttling, traffic shaping, bandwidth usage etc - you always need to read loads of reviews and come to sites like this and make an informed decison.
More info on traffic shaping here:-
http://en.wikipedia.org/wiki/Traffic_shaping
Cheers