(f) is a person to whom a certificate has been granted under section 16 of the Immigration and Passport Act 1977 of the Virgin Islands (in this subsection referred to as "the Act", and references to the Act or to any section thereof include references to any enactment amending, replacing or re-enacting the same) and has not been revoked under section 17 of the Act; and (without prejudice to the right of any person to apply for the grant of such a certificate under the Act) a British overseas territories citizen by virtue of naturalisation in the Virgin Islands has a right by virtue of this Constitution to apply for the grant of such a certificate;