In some circumstances particular categories of person are under a positive duty to apply for a particular form of restriction1. These cases are as follows:
- 218.5.1
    Where a registered estate becomes subject to a trust of land, other than on a registrable disposition, and the proprietor or the survivor of joint proprietors will not be able to give a valid receipt for capital money, the registered proprietor2 must apply for a restriction in Form A3.
- 218.5.2
    Where a registered estate is already held on a trust of land and, as a result