Despite any other provision of this Act or of any other Act or law (other than a provision prescribed by the regulations)--
(a) it is not unlawful for a person to engage, participate or otherwise be involved in the conduct of a licensed injecting centre, and
(b) in particular, a person who is engaged, participates or is otherwise involved in the conduct of a licensed injecting centre does not commit an offence under section 14 or 19, or any other offence prescribed by the regulations, just because of that fact.