23.—(1) Where a person moves relevant material of a description specified in Part B of Schedule 6 through Scotland to a destination outside Scotland, that person shall not be required to produce a plant passport which is valid for Scotland as a protected zone, if paragraph (2) or (3) applies.
(2) A plant passport shall not be required in respect of relevant material described in paragraph (1) if that material originates in Great Britain.
(3) A plant passport shall not be required in respect of relevant material described in paragraph (1)–
(a)which during transit through Scotland is accompanied by a document of a type normally used for trade purposes which certifies that the material originates outside Scotland and is in transit to a final destination outside Scotland; and
(b)whose packaging and any vehicle used in connection with its transit through Scotland is–
(i)free from soil and plant debris;
(ii)free from any relevant plant pest in relation to which Scotland is a protected zone;
(iii)of such a nature or construction as to ensure that, if any relevant plant pest is present in the relevant material, there is no risk of its spreading from the packaging or the vehicle as the case may be; and
(iv)sealed immediately after packaging or where appropriate after loading, and remains sealed during transit through Scotland.