2. In regulation 18—
(a)the references in paragraph (3) to written information on oath shall be construed as a reference to a complaint on oath; and
(b)for paragraph (9) there shall be substituted the following paragraph—
“(9) In this regulation, “credentials” in relation to an enforcement officer, means some duly authenticated document showing that he is authorised to act to exercise the powers conferred on him by this regulation.”.