186.This section gives the Treasury a power to subject the “regulating provisions” of the competent authority (which is to say the listing rules and general guidance it produces) and its practices to a competition scrutiny regime.  The Treasury proposes to use this power to create a competition scrutiny regime for the competent authority which is broadly similar to the regime for the Authority, in its role as financial services regulator, as provided for by Chapter III of  Part X of the Act.  The power will enable the Treasury to provide for exclusions from the provisions of the Competition Act 1998 analogous to those for which Chapter III of Part X of the Act makes provision.
187.Subsection (2) makes clear that such a regime will require the person responsible for the competition scrutiny procedure to consider whether any provision or practice, or combination of provisions and practices, has at any time a significantly adverse effect on competition as defined in subsections (6) and (7).
Commentary on Sections Part Vi: Official Listing Section 95: Competition scrutiny