You are probably correct in that they are not too far out, it is just that I seem to often get higher transfer on many sites higher than my supposed IP Profiles, especially upload that is set to 0.888. Even the TBB speedtest which is somewhat more realistic than some usually gives a 1Mbps average upload.
My post is trivial now, but my upload profile was showing 400 odd till earlier this morning with the same speedtest results. Probably just a blip with the BT tester whichcan be temperamental and certainly nothing to complain about.
As of this evening the BT speedtester is agreeing with other test sites, with upload higher than the 0.888Kbps it was showing earlier today. for a few days previous it had been showing a ADSL1 upstream profile incorrectly. It is not showing any line settings now, so possibly they were in the middle of changes to the tester. http://img38.imageshack.us/img38/102/btspeedtest2.jpg