On 17 June 2026 the Competition and Markets Authority ordered Google to rank UK search results using objective and non-discriminatory criteria, publish more about how its rankings work, give businesses advance notice of significant ranking changes and run a formal complaints process, according to the CMA's announcement on gov.uk. It follows a separate 3 June 2026 requirement giving publishers control over how their content feeds Google's AI features, including AI Overviews. The CMA describes these as world firsts for binding rules on Google Search, and they apply specifically to the UK. If you run a small business that depends on Google for customers, this is the regulatory story worth ten minutes of your attention this summer.
What exactly did the CMA change in June 2026?
The publisher requirement came first. The CMA's 3 June 2026 announcement described it as a world-first obligation on Google's search services in the UK. Publishers get tools to stop their content being used to power AI features in search, and separately to stop it being used for fine tuning Google's AI models. Google must also attribute publisher content properly, using clear links, in AI generated results, and must publish compliance reports every six months for the first year.
Two weeks later the CMA followed with the pair of requirements aimed at businesses and consumers. Per the 17 June 2026 announcement, Google has six months to implement fair ranking and three months to implement data portability.
Why can the CMA tell Google what to do?
The designation itself, confirmed on 10 October 2025 according to the CMA's announcement on gov.uk, was not a finding of wrongdoing. It was a finding of scale. When one platform handles more than nine in ten searches in the country, the businesses that depend on it have no realistic alternative, so the law now treats Google Search as regulated infrastructure rather than just another product. That framing matters for owners because it means these rules are not a one-off. The CMA said it will monitor compliance through regular reporting and has explicitly reserved the right to add further measures.
What does the fair ranking requirement actually require?
The detail worth noting is the scope. The requirement explicitly covers ranking inside AI Overviews, the AI generated answers at the top of many results pages, not just the classic blue links, per the CMA's formal measure page. Sponsored results are excluded, so Google Ads auctions are untouched by this particular rule. The measure page also confirms a grievance mechanism: businesses will be able to formally challenge manual ranking actions and changes with potentially harmful effects. The CMA said UK businesses told it during consultation that Google's ranking practices were neither fair nor transparent, and that changes arrived without sufficient notice, which is a complaint almost any owner who lived through a core update will recognise.
Will Google really warn you before algorithm updates?
Search Engine Land's Barry Schwartz, reporting on the decision on 17 June 2026, wrote that he highly doubts Google will follow these orders and predicted Google will vigorously fight them. His reasoning is worth taking seriously: full transparency about ranking would hand a manual to spammers as well as to honest businesses. So the realistic outcome is a negotiated middle, more published documentation and structured notice than today, less than a full recipe. For context on how disruptive unannounced changes can be, the June 2026 spam update hit some UK small business sites with no warning at all, which is exactly the pattern this rule is meant to soften.
What do the new AI Overviews controls mean for your content?
The CMA's publisher requirement is aimed at news organisations, but the tools apply to publishers broadly, and a trades firm with fifty helpful articles is a publisher in this sense. The strategic question is whether opting out is wise. If your content is excluded, AI Overviews still appear for your target queries, they just get built from and cite someone else. For most small firms the attribution rule is the more valuable half: clear links inside AI answers create a citation channel you can actively compete for. That is the discipline behind generative engine optimisation for UK small businesses, and it is the same content and structure work that supports visibility in AI search tools generally.
What is search data portability and should owners care?
This is the sleeper item for owners. The CMA's stated aim, in its 17 June announcement, is a wave of third party services built on people's own search history, personalised offers, discount platforms, rewards schemes. If those services get traction, they become new shelf space for local and niche businesses, a place where a customer's demonstrated intent, searches for boiler repair or wedding venues, gets matched to providers outside Google's own results page. Nothing to build today, but if you run offers or loyalty incentives, watch this space from autumn 2026, because early platforms will be hungry for merchant partners.
Does this change how you should do SEO day to day?
The CMA's Will Hayter called search a vital gateway for businesses in the UK to reach customers and promised clearer, predictable and more transparent ranking systems, per the 17 June gov.uk release. Predictability rewards businesses that measure. The owners who benefit from the complaint route will be the ones who can show a dated baseline and a dated drop. The owners who benefit from AI Overview attribution will be the ones whose pages answer questions directly enough to be cited. Neither of those is new work, it is the same fundamentals with a regulator now standing behind them.
What are the trade-offs and open questions?
There is also a genuine tension inside the publisher rule. If large numbers of quality publishers opt out of AI features, AI Overviews could get worse while remaining just as prominent, which helps nobody. And the fair ranking rule excludes sponsored results entirely, so the paid auction that many small businesses actually spend money in sits outside this framework for now. The CMA has said further action may follow, and its six-monthly compliance reports will be the best public signal of whether the regime has teeth or just paperwork.
What should a UK small business owner do before the deadlines land?
The concrete list is short. First, start a monthly evidence file: top twenty rankings, Search Console clicks and impressions, Google Business Profile actions, revenue by channel. Second, decide now whether you would ever opt your content out of AI features, and for most owners the answer should be no, compete for the citations instead. Third, tidy the pages that answer your customers' most common questions, because clear, attributed answers are what both the new rules and the AI systems reward. None of it requires a lawyer, all of it requires consistency.
CMA Forces Google to Play Fair — FAQ
What did the CMA order Google to do in June 2026?
The Competition and Markets Authority imposed three conduct requirements on Google Search in June 2026. On 3 June it required Google to let publishers opt out of their content powering AI features such as AI Overviews, and to attribute publisher content with clear links in AI generated results. On 17 June it added a fair ranking requirement, which obliges Google to rank organic results using objective and non-discriminatory criteria, explain how rankings work, give advance notice of significant changes and run a formal complaints process, plus a data portability requirement letting users move their search data to authorised third parties. The rules sit under the Digital Markets, Competition and Consumers Act, which the CMA can use because it designated Google with strategic market status in October 2025.
When do the new Google rules take effect in the UK?
The deadlines are staggered. According to the CMA's 17 June 2026 announcement, Google has three months to implement search data portability, which lands around mid September 2026, and six months to implement the fair ranking requirement, which lands around mid December 2026. The publisher conduct requirement imposed on 3 June 2026 gives Google nine months, so roughly March 2027, although the CMA said important controls should be available to publishers sooner. Google must also submit and publish compliance reports every six months for the first year under the publisher requirement, so the first public evidence of how Google is complying should appear before the end of 2026.
Will Google now warn businesses before algorithm updates?
In principle, yes, for significant changes. The fair ranking conduct requirement obliges Google to provide greater transparency about how rankings work and to give advance notice of significant ranking changes that could harm visibility. In practice, expect limits. The requirement covers significant changes, not every daily tweak, and the CMA has not yet published a public definition of what counts as significant. Commentators such as Barry Schwartz at Search Engine Land have openly doubted that Google will comply without a fight, because detailed transparency would hand ammunition to spammers as well as honest businesses. The sensible position for an owner is to treat any advance notice as a bonus, keep monitoring rankings and traffic as normal, and use the new formal complaint route if a manual action or a change looks unfair.
Can I stop Google using my website content in AI Overviews?
Once the publisher conduct requirement is implemented, yes. The CMA's 3 June 2026 decision requires Google to give publishers effective tools to prevent their content being used to power AI features in search, including AI Overviews, and to opt out of content being used to fine tune Google's AI models, without having to leave Google Search entirely. That last part matters, because previously the practical choice was often all or nothing. Whether a small business should opt out is a different question. AI Overviews answers will still appear for your target queries, and if your content is excluded the citations and clicks may go to a competitor instead. For most small firms the better play is to stay in, and push for the clear link attribution the CMA now requires.
Does any of this change how I should do SEO?
The fundamentals do not change. Google still rewards relevant, genuinely useful content, accurate business information, reviews and a technically sound site, and the CMA rules do not alter what ranks, only how accountable Google must be about it. What changes is your recourse. From late 2026 you get more published explanation of how ranking works, advance notice of significant changes, and a formal route to challenge manual actions or harmful changes. That makes disciplined measurement more valuable, because a documented before and after is what turns a complaint into a case. Keep a monthly record of your key rankings, Search Console clicks and Google Business Profile actions so you can evidence any loss.
