In section 69(1) of the Principal Act—
(a) after paragraph (h), insert —
"(ha) classes of registration;";
(b) in paragraph (n), for "approved architectural partnerships and approved architectural companies" substitute "approved partnerships and approved companies";
(c) in paragraph (o), for "approved architectural companies and approved architectural partnerships" substitute "approved partnerships and approved companies";
(d) in paragraph (u), for "approved architectural partnership or approved architectural company" substitute "approved partnership or approved company".