Technotiger, you were spot on! Didn't think of using IE as FF is my preferred browser. In IE the test worked and the results were similar to those from Namesco (my preferred tester).
The job tomorrow is to remove the I-Plate and see what happens to the speed. BT says I can only get up to 1.5Mbps. With the I-Plate, the results are: Namesco: 1175 Download, 245 Upload BT: 1152 Download, 288 Upload.
Not bad, I think.
Stuartli, thanks also for your response. I did not give all the info in my original post. My apologies.
I had given up on using the BT Speedtest gadget a couple of years ago as it gave me more problems than it was worth. On seeing this thread I thought I would give it a try and rather to my surprise it worked quite well.
I still don`t think it as good as the Namesco one that Stuartli mentions above and is the one that I will stick with even though the BT one seems to work better than it once did.
This thread is now locked and can not be replied to.