That can be addressed by obtaining those wider necked vials but I'm not yet convinced of it's true conformity, nor the effect of cotton on perfumes yet. I shall have to soak some for a month alongside a normal sample and see what effect it has.
The issue definitely seems to have come from the CAA and not the Post office. I suspect the PO will be struggling with the sheer loss of business soon. Perhaps the CAA have transport plans for Britain. You can bet your bottom dollar this will be about profit margins and business somewhere along the line. It certainly be nothing to do with safety.
I shall ask again.