4. Section 54 shall be amended by inserting after paragraph (b) of subsection (1) the following —
“(ba)a decision to refuse an application for a certificate under section 43B above, or to withdraw such a certificate;
(bb)a decision to make a certificate issued under section 43B above subject to a condition that it is to be in force in relation to part only of the land to which the application for the certificate related;”.