Duty to return certificates, etc
13. Where—
(a)a person’s registration as a carrier of controlled waste ceases to have effect by virtue of regulation 11 or Article 40(2) or 41(8) and (9) of the 1997 Order; or
(b)a person is issued with an amended certificate under regulation 7(2) or 8(2),
he shall immediately return to the Department his certificate of registration, or, as the case may be, his previous certificate of registration, together with any copies of it issued by the Department.