31.—(1) No person shall—
(a)intentionally obstruct any person acting in the execution of these Regulations;
(b)without reasonable cause, fail to give to any person acting in the execution of these Regulations any assistance or information which that person may reasonably require of him for the purposes of his functions under these Regulations; or
(c)furnish to any person acting in the execution of these Regulations any information which he knows to be false or misleading.
(2) Nothing in paragraph (1)(b) above shall be construed as requiring any person to answer any question or give any information if to do so might incriminate him.