As soon as it appears to the Commission or to the Board that a document placed at their disposal under section six of this Act is no longer required by the Commission or the Board for the purpose of the discharge of their functions under this Act, they shall cause it to be delivered into the custody of the person who but for the provisions of that section would have been entitled to the custody thereof.

Subject to the provisions of section six of this Act, sealed copies made pursuant to the Tithe Acts of instruments of apportionment shall be under the charge and superintendence of the Master of the Rolls, who may direct that any such copy shall be transferred to the Public Record Office, or to any public library or museum or historical or antiquarian society which may be willing to receive it, and if any such copy is transferred to any public library or museum or historical or antiquarian society, the governing body thereof shall thereafter have the custody thereof and shall be responsible for the proper preservation thereof.

The Master of the Rolls may make rules for giving effect to this subsection.