7.—(1) A person shall not—
(a)intentionally obstruct an authorised officer acting in the execution of these Regulations;
(b)without reasonable cause, fail to give an authorised officer acting in the execution of these Regulations any assistance or information which he may reasonably require for the performance of his functions under these Regulations; or
(c)furnish information which he knows to be false or misleading in a material particular.
(2) Nothing in paragraph (1)(b) shall be construed as requiring a person to answer any question or give any information if to do so might incriminate him.