12.—(1) For the purposes of an investigation under regulation 3, the Director may require any person to produce to him a specified document, or to provide him with specified information, which he considers relates to any matter relevant to the investigation.
(2) The power conferred by paragraph (1) is to be exercised by a notice in writing.
(3) A notice under paragraph (2) must indicate—
(a)the subject matter and purpose of the investigation; and
(b)the nature of the offences created by regulations 22 to 24.
(4) In paragraph (1) “specified” means—
(a)specified, or described, in the notice; or
(b)falling within a category which is specified, or described, in the notice.
(5) The Director may also specify in the notice—
(a)the time and place at which any document is to be produced or any information is to be provided;
(b)the manner and form in which it is to be produced or provided.
(6) The power under this paragraph to require a person to produce a document includes power—
(a)if the document is produced—
(i)to take copies of it or extracts from it;
(ii)to require him, or any person who is a present or past officer of his, or is or was at any time employed by him, to provide an explanation of the document;
(b)if the document is not produced, to require him to state, to the best of his knowledge and belief, where it is.