12(1)No provision of any tenancy prohibiting, restricting or otherwise relating to a sub-demise by the tenant shall have effect with reference to any lease executed to give effect to section 14 of this Act.
(2)Where by reason of section 14(4) proviso of this Act it is necessary to make any payment to discharge the house and premises from a charge affecting the interest of any landlord, the reversioner, if he is not the landlord liable or primarily liable in respect of the charge, shall not be required to make that payment otherwise than out of money made available for the purpose by that landlord, and it shall be the duty of that landlord to provide for the charge being discharged.