Forms and documents to be returned to Registrar
18.—(1)  If a person ceases to be an authorised examiner, he shall send to the Registrar all unused records and copies of test certificates, inspection reports and records kept or preserved by him under rule 15(1), (4) and (5).
(2)  Where an authorisation of an examiner ceases to have effect, but some other authorisation of that examiner continues in force, the Registrar may consent to the retention by that examiner of all or any of the documents referred to in paragraph (1).