13.—(1) The Secretary of State or any person authorised by the Secretary of State may issue a document of authorisation in accordance with section 3 of Part A of the International Grain Code.
(2) A document of authorisation issued under paragraph (1) must—
(a)be in writing;
(b)specify the date on which it takes effect; and
(c)specify the terms, if any, on which it is given.