11.—(1) No person may enter, without lawful authority or reasonable excuse, a bovine semen centre without the authority of the centre veterinarian.
(2) A person authorised by the centre veterinarian to enter a bovine semen centre must comply with any requirements laid down by the centre veterinarian to ensure compliance with these Regulations.
(3) The centre veterinarian must ensure that unauthorised persons do not enter the bovine semen centre.