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When is the deadline for maximum duration of a stay for a cma investigation?

The catalogue records a 12 months period from The order granting the stay. This draft page remains free only until its source, worked example and limits are reviewed.

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This page is in preparation. It does not offer an automated deadline or a paid record until the missing source or calculator evidence is complete.

In preparation

The existing catalogue does not yet have a registered adapter or source evidence for this exact question. It remains available as a public preparation page only.

Example pending review

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Calculation basis and source

Period
12 months
Trigger
The order granting the stay
Counting
The encoded calculator method must be independently documented before publication.
Rollovers and holidays
Holiday, closure and order treatment must be independently documented before publication.

This route remains in preparation until a pinpoint official source is recorded.

  • Extension is expressly provided for on the CMA's application, and the rule also preserves anything "otherwise ordered". Rule 72E(3) requires an extension application to be supported by evidence addressing the progress of the investigation and when it is expected to be completed. Given CMA digital markets investigations routinely run beyond a year, model this as a review date rather than a hard expiry.
  • In force from 1 October 2025 (SI 2025/999). Practically this is the most useful Part 4A date to diarise: it is when the claimant can expect the case to be relisted or the CMA to have to justify continued suspension. Rule 72E(1) lists the factors on whether to stay at all, including the stage of proceedings, the likely duration of the stay, and the overlap of factual and legal i

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