4.—(1) An inspector shall, on producing some duly authenticated document showing his authority, have the right at all reasonable hours to enter a holding which has been selected for sampling, for the purposes of ascertaining in accordance with the Commission Decision—
(a)whether Salmonella spp. exists or has existed there;
(b)the Salmonella vaccination status of the broiler chickens on the holding; and
(c)whether anti-microbials have been used.
(2) In addition to his right under paragraph (1), an inspector may also enter a holding for the purposes of the enforcement of these Regulations.
(3) When he has entered a holding an inspector may—
(a)take samples of faecal and environmental material;
(b)examine any records in whatever form, including computerised records, and retain or take copies of those records;
(c)make inquiries of any person and require him to provide any information and documentation, including records, that appear to him to be, or likely to be, relevant; and
(d)take with him any person, vehicle or equipment he considers necessary for the execution or enforcement of these Regulations.