@Drago and
@User9609
I realise that my post might appear to exonerate the lorry driver, which is not my intention! The fact is that mirrors (particularly HGV ad Coach mirrors - look at them, some are HUGE!!)
do cause a large area of road off to the right for the off-side mirror, and off to the left for the near-side mirror, and these can, and do (I speak from experience) shield the view, particularly of a moving pedestrian, bicycle, and motorcycle, because the movement of the HGV and the ped/bike/motorbike, can be commensurate with the moving field of vision of the lorry driver. It's not a case of something materialising into a blind spot, it's a case of the lorry driver, not making certain that the blindspot is clear.
@Brandane makes the point more clearly than my original post, but the issue, IMVHO is that the HGV driver did not see the cyclist, and the mirror blind spot is a very important point for investigation - although, I am not familiar with the road, nor the specific incident, so I am very likely to be wrong. - it's nothing to do with not expecting
the cyclist to be on that road at that time, it's more to do with not
being certain that the road was clear, which appears not to have been part of this investigation, or, if it was, not to have been reported in the article.