29At the beginning of subsection (2) of section 37 of that Act (inspectors) there shall be inserted the words " Subject to subsection (3) of this section " and after that subsection there shall be inserted the following subsection—
“(3)The powers conferred on an inspector by paragraph (a) or (b) of the preceding subsection shall not be exercisable as respects any refinery or land unless not less than 7 days' notice has been given to a person having control of that refinery or land.”