4.—(1) An inspector shall, on producing, if required to do so, some duly authenticated document showing his authority, have the right at all reasonable hours to enter any land or premises for the purposes of ascertaining whether there is or has been on the premises any contravention of these Regulations.
(2) An inspector shall have powers to carry out all checks and examinations necessary for the enforcement of these Regulations, and in particular may—
(a)carry out inspections of and take blood samples from any animals on the premises;
(b)take with him a representative of the European Commission acting for the purposes of the Directive.