4(1)The Board may—E+W
(a)where it receives a request under paragraph 2 to which paragraph 3 does not apply, or
(b)in any other case where it considers it appropriate to do so,
carry out such inquiries as it considers appropriate to enable it to determine whether it is appropriate to hold a section 24 investigation or a section 26 investigation in respect of an activity.
(2)In the case of a section 24 investigation, that activity must be a legal activity.