s 23 Notice to registrar of existence of restriction on amendment of articles
(1) Where a company's articles— (a) on formation contain provision for entrenchment, (b) are amended so as to include such provision, or (c) are altered by order of a court or other authority so as to restrict or exclude the power of the company to amend its articles, the company must give notice of that fact to the registrar. (2) Where a company's articles— (a) are amended so as to remove provision for entrenchment, or (b) are altered by order of a court or other authority— (i) so as to remove such provision, or (ii) so as to remove any other restriction on, or any exclusion of, the power of the company to amend its articles, the company must give notice of that fact to the registrar.