22.—(1) Where a person moves relevant material of a description specified in Part B of Schedule 6 through Great Britain to a destination outside Great Britain, he shall not be required to produce a plant passport which is valid for Great Britain 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 Great Britain is accompanied by a document of a type normally used for trade purposes which certifies that the material originates outside Great Britain and is in transit to a final destination outside Great Britain; and
(b)whose packaging and any vehicle used in connection with whose transit through Great Britain is—
(i)free from soil and plant debris;
(ii)free from any relevant tree pest in relation to which Great Britain is a protected zone;
(iii)of such a nature or construction as to ensure that, if any relevant tree 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 Great Britain.