11.—(1) Where, after a phytosanitary certificate has been issued in respect of anyplant, plant product or other object specified in the first column of section 1 of Part A ofSchedule 4 or Part B of Schedule 5 the plant, plant product or other object has been consigned to, stored, repacked or split up in a third country other than that in which the certificate was issued, that certificate shall be accompanied by a reforwarding phytosanitary certificate issued in that other country.
(2) Where any plant, plant product or other object specified in Part B of Schedule 5, following its export from Great Britain to a third country, is landed in Great Britain it shall be accompanied by a phytosanitary certificate issued in the country from which it was directly consigned to Great Britain.
(3) Where, after a phytosanitary certificate has been issued in respect of any plant, plant product or other object specified in the first column of section 1 of Part A of Schedule 4 or Part B of Schedule 5 the plant, plant product or other object has been imported into Great Britain the certificate shall, subject to a satisfactory inspection of the plant, plant product or other object by an inspector, be replaced by a plant passport in accordance with the requirements of Part A of Schedule 5.