It's very true that an enterprise,being a multi person organisation, does exactly what is requested by the op,it signs for individual sections and it has always been accepted practice by the Niceic to do so
For large works,I have no problem with this necessity, but for domestic work I do
Larger projects will tend to have a competent person involved and/or signing for each section
Domestic work that is being signed for the testing section, may have been constructed by a fool, designed by an idiot but tested by a competent person who may see no evidence of that stupidity
As it stands he has to assume the responsibility for the idiot
When procedures are ironed out by the scams and the government,he may be able to do exactly whats suggested lawfully.ie for the same idiot but this time without the responsibility that now exists were he to do so