13Where any goods seized or purchased by an officer in pursuance of this Schedule are submitted to a test, then—
(a)if the goods were seized, the officer shall inform the person mentioned in paragraph 4 of this Schedule of the result of the test;
(b)if the goods were purchased and the test leads to the institution of proceedings for an offence under section 2 of this Act or under section 3 of this Act so far as it relates to prohibition orders and prohibition notices, the officer shall inform the person from whom the goods were purchased of the result of the test;
and the officer shall, where as a result of the test such proceedings are instituted against any person, allow him to have the goods tested if it is reasonably practicable to do so.
14The Secretary of State may by regulations provide that any test of goods seized or purchased by or on behalf of an enforcement authority in pursuance of this Schedule shall, in such cases as are specified in the regulations—
(a)be carried out at the expense of the authority in a manner so specified and by a person specified in or determined under the regulations ; or
(b)be carried out either as mentioned in sub-paragraph (a) above or by the authority in a manner specified in the regulations.