17E+W+SIn subsection (1) of section 42 of that Act (default powers)—
(a)for the words “one of his officers” there shall be substituted the words “ a person (whether or not an officer of his) who is authorised by him in writing to do so ”; and
(b)there shall be inserted at the end th e words “ but if regulations made by the Ministers so provide, no person shall be so authorised unless he has such qualifications as may be prescribed by the regulations. ”