Originally Posted by Rotors
but in the Vauxhall instance no mention of high-speed blade debris causing damage has been stated.
Not quite right. On p8 under "Other Damage", it says:
Originally Posted by AAIB
A residential building below
the crane suffered minor structural damage, including
broken glass panels, from impact by released sections of
the helicopter’s main rotor blades.
Concur with others' comments about the AAIB's impressive ability to produce and release such a clear and readable factual report in a little under a week.