He had to catch me up on the road leading to the road about, so I don't think in this instance that I was in his blind spot however, by the time he had got as close to be as he did I doubt he could have seen me. I was pretty much stopped when he drove up my backside, inches if that from my back wheel where he started honking. Looking back actually it was really scary... I knew at the time if I lost y balance and fell off I would have been under that artic without doubt. I am now actually starting to dred seeing another at a roundabout, you know the more you think about it, it starts to worry you! I really don't want to have any fears like thta as I have been doing really well! Thanks for your reply Mighty Mariner