To be fair the OP is the kind of nightmare employee that has made her like she is.
It’s her yard she can ask you to do what she wants, though whether you do it or leave is up to you…
Emailing DVSA and HSE for answers, instead of going to the people above her and asking■■? Not getting the answers wanted so coming on here for moral support from other drivers■■?
Industry is full of snowflakes nowadays…