27.—(1) A designated customs official may, for the purpose of facilitating the exercise by an enforcement officer of any functions conferred on an enforcement officer by or under this Order, seize any relevant organism which is being imported or exported or which has been imported or brought to a place for the purpose of export—
(a)where the designated customs official suspects that it is a specimen; or
(b)on the request of an enforcement officer.
(2) Any relevant organism seized under paragraph (1) may be detained for not more than five working days.
(3) A request under paragraph (1)(b)—
(a)may identify the relevant organism in any relevant way; and
(b)must be made in writing or be made orally and confirmed in writing as soon as reasonably practicable thereafter.
(4) Any relevant organism seized under paragraph (1)—
(a)must, if seized following a request under paragraph (1)(b), be dealt with during the period of its detention in such manner as the requesting enforcement officer may direct;
(b)may, if the designated customs official considers it appropriate, be transferred to an enforcement officer, who may hold it for a period not longer than the remainder of the detention period referred to in paragraph (2).
(5) A relevant organism held by an enforcement officer under paragraph (4)(b) must be held in contained holding.