8. An officer of an enforcement authority may, for the purposes of exercising his functions under this Schedule, require—
(a)any person who is required by regulation 7(4) to retain an EC declaration of conformity during the period in which that person is required to retain that document, to produce such document;
(b)any person who is in possession of an EC declaration of conformity, or of a copy of such document, at any time to produce it;
(c)any person, to produce such technical documentation relating to such equipment as are in his possession or under his control; or
(d)any person, to give him such information as he may reasonably require,
and such officer may inspect any thing which he may require to be produced under this paragraph, and take a copy thereof or of any part thereof.