(1) The relevant authority may not accept an undertaking from a person under section 161C unless it has provided the person with information about the possible consequences of failing to comply with the undertaking.

(2) The CMA may not begin an implementation trial under section 161C(4) -

(a) in respect of qualifying remedial action that would be taken in accordance with subsection (2) of section 138, after the end of the period within which the CMA would otherwise have been required to discharge its duty under that subsection;

(b) in respect of qualifying remedial action that would be taken in accordance with section 162A(5), after the end of the period mentioned in section 162A(6).

(3) Subsections (3), (5) and (6) of section 138 apply to action taken by the CMA under section 161C as they apply to action taken by the CMA under section 138(2).