11.—(1) An inspector may—
(a)at any reasonable hour enter premises;
(b)make any enquiries, observe any activity or process, and take photographs; and
(c)inspect any article or records of any class which appear to the inspector to be relevant for the purposes of his investigation, and may make or require copies of such records or remove such records as he reasonably requires.
(2) An inspector shall—
(a)produce evidence of his authorisation when requested to do so;
(b)as soon as he reasonably can, provide to the person appearing to him to be responsible for records he removes under paragraph (1)(c) a written receipt identifying those records; and
(c)as soon as he reasonably can after deciding that they are no longer required, return such records, apart from those used as evidence in court proceedings.