(1) This section and sections 161C to 161E make provision in relation to the acceptance of undertakings and making of orders by a relevant authority on a trial basis for the purpose of assessing the effectiveness of qualifying remedial action (and the acceptance of undertakings and making of orders on that basis is referred to in this Part as an "implementation trial").

(2) In this section and in sections 161C to 161E "relevant authority" means the CMA or the Secretary of State.

(3) In this Part -

"implementation trial measure" means an undertaking accepted, or order made, under section 161C (and references to the imposition of such a measure are to be read as the acceptance of an undertaking or the making of an order, as the case may be);