Summary

• The CMA has imposed two conduct requirements on Google’s general search services under the UK digital markets regime.
• Google must improve ranking fairness and transparency, including for AI Overviews, and support search data portability to authorised third parties.
• The rules affect publishers, comparison services, rewards platforms, retailers, and businesses dependent on search visibility.

The Competition and Markets Authority has imposed two conduct requirements on Google’s general search services, extending the UK’s digital markets regime into search ranking, AI Overviews, and search data portability.

The first requirement covers fairer and more transparent organic search rankings. Google must rank organic results using objective and non discriminatory criteria, including in AI Overviews, provide businesses with clearer information about how rankings work, give advance notice of significant changes, and create routes for businesses to raise concerns about ranking decisions.

The second requirement gives legal backing to search data portability. Google must allow users to transfer search data to authorised third parties, including rewards platforms and companies offering personalised discounts or offers.

The measures follow earlier CMA action requiring Google to give publishers effective tools to control whether their content is used to power Google’s AI features. Further activity is expected over the summer, making Google Search an early test of the UK’s post Brexit digital competition regime.

Search visibility shapes traffic, customer acquisition, publisher revenue, comparison shopping, local services, ecommerce, travel, and professional services. Businesses have long complained that ranking changes can arrive with little warning, leaving investment and marketing strategies exposed to platform decisions. AI generated search results add another layer because answers can be surfaced inside Google’s own interface rather than sending users to third party sites.

AI search pulls scrutiny into ranking

Search regulation used to focus mainly on dominance, advertising markets, and self preferencing. AI search makes the ranking layer harder to scrutinise because the result is no longer only a list of links. AI Overviews blend retrieval, summarisation, ranking, and presentation, making it harder for affected businesses to understand how they have been treated.

The CMA’s decision to apply fair ranking obligations to AI Overviews, but not sponsored results, signals that the regulator sees these AI features as part of the organic discovery environment. That is a significant boundary for publishers, comparison services, ecommerce companies, and other businesses whose content or listings may be drawn into AI search experiences.

Publishers will watch the connection with the CMA’s earlier content use measures. Retailers, travel services, local businesses, and comparison platforms may focus more closely on complaints, notice periods, and ranking transparency. Those processes could reduce some uncertainty, although the effect will depend on how much detail Google provides and how actively the CMA enforces the rules.

The data portability requirement is narrower but still commercially relevant. Search history can support personalisation, rewards, offers, and comparison tools. Easier transfer to authorised third parties could help smaller services build products that would otherwise struggle against Google’s data advantage.

Google will still retain enormous power in UK search. Conduct requirements do not create competition by themselves, and businesses dependent on search traffic will remain exposed to platform design changes. The difference is that the CMA now has live obligations it can monitor, enforce, and expand.

The coming months will show whether the UK regime can alter conduct in a concentrated digital market without becoming a paperwork exercise. The immediate effect is to bring AI search, business visibility, and user data mobility into a more formal competition framework.