(1) Every power conferred on a relevant authority by or under this Act (however expressed) to require the provision or production of information or documents includes the power -
(a) to require information to be provided or produced in such form as the authority may specify, including, in relation to information recorded otherwise than in a legible form, in a legible form;
(b) to take copies of, or extracts from, any documents provided or produced by virtue of the exercise of the power;
(c) to require the person who is required to provide or produce any information or document by virtue of the exercise of the power -
(i) to state, to the best of his knowledge and belief, where the information or document is;
(ii) to give an explanation of the information or document;
(iii) to secure that any information provided or produced, whether in a document or otherwise, is verified in such manner as may be specified by the authority;
(iv) to secure that any document provided or produced is authe
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