A purchaser shall not be prejudicially affected by notice of—
any instrument or matter capable of registration under the provisions of the Land Charges Act, 1925, or any enactment which it replaces, which is void or not enforceable as against him under that Act or enactment, by reason of the non-registration thereof;
any other instrument or matter or any fact or thing unless—
it is within his own knowledge, or would have come to his knowledge if such inquiries and inspections had been made as ought reasonably to have been made by him; or
in the same transaction with respect to which a question of notice to the purchaser arises, it has come to the knowledge of his counsel, as such, or of his solicitor or other agent, as such, or would have come to the knowledge of his solicitor or other agent, as such, if such inquiries and inspections had been made as ought reasonably to have been made by the solicitor or other agent.
Paragraph (ii) of the last subsection shall not exempt a purchaser from any liability under, or any obligation to perform or observe, any covenant, condition, provision, or restriction contained in any instrument under which his title is derived, mediately or immediately; and such liability or obligation may be enforced in the same manner and to the same extent as if that paragraph had not been enacted.
A purchaser shall not by reason of anything in this section be affected by notice in any case where he would not have been so affected if this section had not been enacted.
This section applies to purchases made either before or after the commencement of this Act.