(1) One or more authorised officers may or, where directed to do so by the competent authority, shall, carry out an investigation into any suspected infringement of relevant competition law.

(2) Subject to this Act and any regulations made under it and -

(a) in the case of the Competition and Consumer Protection Commission, the Consumer Protection Act 2007 and the Act of 2014 and any regulations made thereunder, and

(b) in the case of the Commission for Communications Regulation, the Act of 2002 and any regulations made thereunder,

the competent authority may regulate its procedures, by rules or otherwise, for conducting such investigations in such manner as it shall from time to time determine, including the scope and terms of the investigation to be carried out, whether as respects the matters or the period to which an investigation is to extend or otherwise, and may, in particular, limit the investigation to matters connected with particular circumstances or particular issues.