16. The class or description of person prescribed for the purposes of section 14(1)(b) of the 1983 Act are such persons (other than members of the forces within the meaning of section 59(1) of the 1983 Act) who are employed in the service of the Crown in a post outside the United Kingdom and who are required to devote their whole working time to the duties of such a post and whose remuneration in respect of that post is paid wholly out of money provided by Parliament.