s 71 Duty to disclose unregistered interests
Where rules so provide— (a) a person applying for registration under Chapter 1 of Part 2 must provide to the registrar such information as the rules may provide about any interest affecting the estate to which the application relates which— (i) falls within any of the paragraphs of Schedule 1, and (ii) is of a description specified by the rules; (b) a person applying to register a registrable disposition of a registered estate must provide to the registrar such information as the rules may provide about any unregistered interest affecting the estate which— (i) falls within any of the paragraphs of Schedule 3, and (ii) is of description specified by the rules.