18.—(1) A person shall not knowingly keep, store, sell, plant, move or otherwise dispose of or knowingly cause or permit to be kept, stored, sold, planted, moved or otherwise disposed of—
(a)any pest of a description specified in Schedule 1;
(b)any relevant material of a description specified in column 2 of Schedule 2 carrying or infected with a pest of a description specified in column 3 of that Schedule in relation to that relevant material;
(c)any pest which, although not specified in Schedule 1 or in column 3 of Schedule 2, is not normally present in Northern Ireland and which is likely to be injurious to trees in Northern Ireland; or
(d)any relevant material landed in contravention of Article 4(1)(d), (e) or (f) or Article 171(d), (e), (f) or (g).
(2) Nothing in paragraph (1) shall prohibit the keeping, storing, moving or otherwise disposing of any pest or relevant material referred to in that paragraph in compliance with any requirement imposed by an inspector under Part 6 in respect of that pest or relevant material.