This guidance is intended for merging parties and for legal advisers advising on a transaction where interim measures may be relevant. It should be read in conjunction with Mergers: Guidance on the CMA’s Jurisdiction and Procedure (CMA2 revised). Where there is any difference in emphasis or detail between this guidance and other Competition and Markets Authority (CMA) guidance, the most recently published guidance takes precedence. This guidance reflects experience gained since the current system was introduced in April 2014, in particular, recent enforcement action. It replaces CMA60 (Guidance on initial enforcement orders and derogations in merger investigations) and those portions of CMA2 revised which dealt with interim measures.