15Right to lodge
(1)Subject to subsection (3), a person may lodge a caution against the registration of title to an unregistered legal estate if he claims to be—
(a)the owner of a qualifying estate, or
(b)entitled to an interest affecting a qualifying estate.
(2)For the purposes of subsection (1), a qualifying estate is a legal estate which—
(a)relates to land to which the caution relates, and
(b)is an interest of any of the following kinds—
(i)an estate in land,
(ii)a rentcharge,
(iii)a franchise, and
(iv)a profit a prendre in gross.
(3)No caution may be lodged under subsection (1)—
(a)in the case of paragraph (a), by virtue of ownership of—
(i)a freehold estate in land, or
(ii)a leasehold estate in land granted for a term of which more than seven years are unexpired;
(b)in the case of paragraph (b), by virtue of entitlement to such a leasehold estate as is mentioned in paragraph (a)(ii) of this subsection.
(4)The right under subsection (1) is exercisable by application to the registrar.