Agreed, in fact this is so obvious I can't believe it needs debating. I don't know what video other people were watching but I saw an HGV move out of it's lane and hit another vehicle. The HGV driver clearly hadn't checked their blind spot but decided to make the manoeuvre anyway.A HGV driver must assume that there is something in his blind spot. If this is a left hand drive HGV then even more so.