(1)The Ombudsman must not investigate any matter specified in schedule 4.
(2)Her Majesty may by Order in Council amend schedule 4 so as to—
(a)modify any entry in it,
(b)remove any entry from it,
(c)add any entry to it.
(3)Nothing in section 7 or schedule 4 prevents the Ombudsman conducting an investigation in respect of action taken by a listed authority in operating a procedure established to examine complaints or review decisions.