I had fun with my firearms license, When i last brought a shotgun i forgot to take my shotgun cit, only my firarms I spent ages arguing with the guy in store.Although the law states that that for a shotgun you need shotgun license and anything else its a firearms, it also states that to own a semi auto shotgun you require a firearms and not a shotgun lincence.........spent the better part of an hour arguing that to the guys.
But with police and most people, they only the the basic parts of the law, they never actually seem to pay attention to the small print, so yes reinactment may be a vaild defence, but police are generally retarded, and the chance is they will only the UKARA, because they didnt read the memo on what else is vaild.