9In section 10 (powers in relation to buildings constructed without warrant or in contravention of conditions of warrant, and buildings whose life has expired)—
(a)for any reference to a master of works there shall be substituted a reference to a local authority ;
(b)in subsection (2), for the words "buildings authority may authorise the local authority to " there shall be substituted the words " local authority may " and the words " and the local authority shall thereupon be entitled to act accordingly " shall cease to have effect.