I will share a top tip I was given years ago…
If as an individual you are ever in doubt of the legality of something in a grey area such as this simply add 2 words after your statement.
I thought I wouldnt need the extra staff cover… your honour.
I didnt think you needed a proper number plate on a load being pulled… your honour.
I assumed white phosphouring HQAC was a good thing… your honour.
I find it helps immeasurably.