s 37 Unregistered interests
(1) If it appears to the registrar that a registered estate is subject to an unregistered interest which— (a) falls within any of the paragraphs of Schedule 1, and (b) is not excluded by section 33, he may enter a notice in the register in respect of the interest. (2) The registrar must give notice of an entry under this section to such persons as rules may provide.