Where the CMA allows an appeal under section 12D to any extent, it must do one or both of the following—
quash the decision (to the extent that the appeal is allowed);
remit the matter back to the Authority for reconsideration and determination in accordance with any directions given by the CMA.
A direction under subsection (1) must not require the Authority to do anything that it would not have power to do (apart from the direction).
The Authority must comply with a direction given to it under that subsection.