there's no part under that which makes the import of a RIF legal under any circumstances. It's ALWAYS illegal, much like the sale is ALWAYS illegal, we simply have a defence against prosecution for committing that crime.
To clarify. Below are the exact definitions of legal terms for UK law:
Illegal - something prohibited, or not authorised by law.
Guilty - having been found to have violated a criminal law.
Offence - a breach of a rule of law.
Specific Defence - a defence suitable to answer for a specified offence in any legislation.
Shall - must, will be, is
Subject to - bound or constrained by
So, when Section 37 of the VCR Act states that:
37 Specific defences applying to the offence under s. 36
(1) It shall be a defence for a person charged with an offence under section 36 in respect of any conduct...
This pertains to:
36:
(1) A person is guilty of an offence if—
(a) he manufactures a realistic imitation firearm;
( b ) he modifies an imitation firearm so that it becomes a realistic imitation firearm;
( c) he sells a realistic imitation firearm; or
(d) he brings a realistic imitation firearm into Great Britain or causes one to be brought into Great Britain.
(2) Subsection (1) has effect subject to the defences in section 37.
(note the
IF in the preceding bit. More importantly, note that at the end of the list of offences, it states that they are
subject to the defences in Section 37, which means, in legal terms, that these defences are caveats to the Law, and the law is limited in scope by those caveats)
So let's break this down. Adherence to the Specific Defences listed in Section 37, means that any of those listed
are a defence
suitable to answer for a potential offence in question. Thus the legislation does not extend to the point where any of those actions are deemed an offence. And if something is suitable to answer to an offence, then anyone who can legitimately use such a Specific Defence will not be found to have done something prohibited by law, therefore they cannot by definition have done anything illegal. This means their actions must therefore be
legal, so they cannot be guilty of an offence. This is why specific defences are listed in UK Acts of Parliament, to clarify how and when the law applies. The UK Government do not put these in the legislation because they were bored when drafting it and wanted to pad it out a bit, or thought it might be fun to have them in there, they are part of the legislation to clarify its boundaries exactly, otherwise it would be completely pointless to put them in there.