What did UK’s CMA force for Google AI Search?

UK CMA orders give publishers opt-out control over AI Search summaries

Britain’s competition regulator, the CMA, has imposed new conduct rules on Google Search that include an AI-training opt-out and, crucially for publishers, mechanisms to prevent their content from being used in Google’s AI Search features.

Under the framework, publishers can opt out of having their websites appear in Google’s AI Search results/summaries. The regulator gave Google a deadline to implement the changes, setting a nine-month window for compliance. Separate coverage also describes a related development: Google is testing a toggle in Search Console that allows certain UK domain owners to choose whether their sites show up in AI search results.

This matters because Google’s AI Search summaries sit on top of traditional crawling and indexing. For news publishers and other content providers, the issue is not just ranking; it’s whether their work is reused to power the AI-generated responses.

The CMA’s action sits in a broader regulatory push to rebalance power in how large search platforms access and leverage content. By creating practical opt-out routes, the UK gives publishers a lever they can pull without relying on informal agreements.

The rules also intersect with AI-training concerns: the CMA’s conduct requirements include an opt-out related to Google’s AI training. Together, the measures aim to reduce compulsory dependence on a platform’s AI features for monetization and distribution.

For publishers, the near-term challenge is operational: identifying and enabling the opt-out settings correctly. For Google, it’s a product change to how AI Search determines eligibility for inclusion.

Overall, the CMA’s intervention formalizes a governance model in which AI search participation can be controlled by the originators of content, rather than being assumed by default.