A conveyance to a purchaser of a legal estate in land shall overreach any equitable interest or power affecting that estate, whether or not he has notice thereof, if—
An equitable interest in land subject to a trust of land which remains in, or is to revert to, the settlor shall (subject to any contrary intention) be overreached by the conveyance if it would be so overreached were it an interest under the trust.
Where the legal estate affected is subject to a trust of land, then if at the date of a conveyance made after the commencement of this Act by the trustees, the trustees (whether original or substituted) are either—
any equitable interest or power having priority to the trust shall, notwithstanding any stipulation to the contrary, be overreached by the conveyance, and shall, according to its priority, take effect as if created or arising by means of a primary trust affecting the proceeds of sale and the income of the land until sale.
The following equitable interests and powers are excepted from the operation of subsection (2) of this section, namely—
Subject to the protection afforded by this section to the purchaser of a legal estate, nothing contained in this section shall deprive a person entitled to an equitable charge of any of his rights or remedies for enforcing the same.
So far as regards the following interests, created before the commencement of this Act (which accordingly are not within the provisions of the Land Charges Act, 1925), namely—
a purchaser of a legal estate shall only take subject thereto if he has notice thereof, and the same are not overreached under the provisions contained or in the manner referred to in this section.