13.—(1) An inspector, upon producing, if required to do so, some duly authenticated document showing his authority, may at any reasonable time enter any premises of a supplier where he reasonably suspects that any activity which is covered by these Regulations is being carried on for the purposes of ascertaining whether there is or has been any contravention of these Regulations.
(2) An inspector on entering any premises under paragraph (1) may take with him such other persons as he reasonably considers to be necessary.
(3) An inspector may carry out all reasonable checks and examinations necessary to ensure compliance with these Regulations, and in particular may—
(a)take any propagating material or sample from any propagating material and send it for analysis;
(b)require the production of any relevant records, lists and other documents;
(c)inspect any relevant records, lists and other documents;
(d)take any relevant records, lists and other documents for copying.
(4) An inspector may by notice in writing served on a supplier in respect of any propagating material on the supplier’s premises that the inspector has reasonable grounds for suspecting fails to comply with the requirements of these Regulations require the supplier not to market or to move from his premises or to permit or cause to be marketed or moved from his premises the propagating material until the supplier has carried out such reasonable measures as the notice may specify.