LGV Blindspot check On DVSA Test

“The Examiner then said that he had not once looked over his right shoulder when pulling away from the kerb. The examiner then left the cab at that point and obviously the candidate asked me why I hadnt taught him to look over his right shoulder. I answered that I had never heard of this being required on an LGV. cars yes, motorcycles yes but not trucks.”

The OP is an NRI registered instructor, he contradicts himself in the original post by saying that his candidate had not missed one blindspot check all during his training but then says that he did not realise that he needed to do this check, following the test failure.
(I fail to see what the instructors height or seating position has to do with not instructing the candidate correctly.)
Do any other DSA/NRI approved instructors think that the blind spot check is not required before moving off from rest?