Is the term "self loading" or "semi-automatic" specifically described anywhere in the act?
The technical description goes something like, "A weapon which, on each pull of the trigger, uses the recoiling components of the mechanism to eject the used cartridge case and chamber a new round. Each pull of the trigger firing only one round".
Has The Home Office "customised" the definition of self loading to suit their own needs?
Also bear in mind, as mentioned earlier by 1066, The Home Secretary has the power to ban any firearm he/she sees as "especially dangerous". This power was introduced by the same act that "banned" the ownership of conventional Sect 1 handguns, and was successfully used to ban lever release and MARS rifles. So. If you did manage to convince NABIS that you had indeed formulated a legal work around, all the Home Secretary has to do is label it "especially dangerous", and they get banned.
Don't poke the tiger.