The policeman i spoke to said the rider is okay though he may have a broken leg and has been lucky as he seems to have gone under the HGV.

bike was fixed (or ss - though no back brake), cream colour, ahead stem, and those bull bar extension bits on the end of risers, black Vs.

i went by after 10 and they still had it cordoned off to take pictures of where the bike was lying. Amazing that they held the traffic for so long.