Summary: The UK Competition and Markets Authority issued its first conduct requirement against Google search on June 3, 2026, letting publishers refuse use of their content in Google AI search features. Google shipped Search Console controls the same day, initially testing with a subset of UK site owners, and says opting out will not affect rankings outside generative features. The order also requires attribution and compliance reports, with full implementation due in nine months.
The UK Competition and Markets Authority (CMA) issued its first “conduct requirement” against Google’s search services on June 3, 2026, invoking the country’s digital markets competition regime. The upshot: publishers may now refuse to let their content power Google’s AI search features. CMA Chief Executive Sarah Cardell branded the measure a “world-first,” one intended to secure fair treatment, greater transparency, and meaningful choice for businesses and consumers while AI reshapes search. Google moved the same day, announcing new Search Console controls that begin with a test among a subset of UK website owners.
None of this landed out of nowhere. Back in October 2025, the CMA designated Google with “strategic market status” (SMS) in general search; remedies were proposed in late January 2026; and in May, Google rolled out a sweeping AI-driven redesign of search. With generative search now answering questions outright and soaking up the clicks, the long-running imbalance — publishers supply the content, Google keeps the traffic — has at last been fitted with a mandatory valve.
The Four Demands Inside the CMA’s Order
Four obligations make up the order. One: publishers may opt out of having their content power AI features such as AI Overviews — something the CMA calls a world first. Two: wherever publisher content appears in AI-generated search results, Google must attribute it properly with clear links. Three: following consultation feedback, publishers may likewise opt out of their content being used to fine-tune AI models. Four: Google has to file and publish compliance reports backed by supporting data, on a six-monthly cycle during the first year.
The CMA set nine months for full implementation, though it expects the key controls well before that deadline, and has signalled “further action in relation to Google’s search business” within weeks. Since the regime went live, four SMS investigations covering Google, Apple, and Microsoft have been opened — conduct requirements are settling in as standard supervisory practice rather than a one-off statement.
Google Ships the Toggle Same-Day: Rankings Stay Untouched
Google had the product piece ready that very day. With the new Search Console control, site owners can pull themselves out of AI Overviews, AI Mode, and AI Overviews in Discover, and Google has said the control “will not be used as a ranking signal” for results outside those generative features. The catch is stated just as openly: sites that opt out get no traffic or impressions from the generative AI features.
A new reporting surface ships alongside the toggle, showing impression counts, which pages land inside AI responses, and the countries where they appear. TechCrunch’s read is blunt: the numbers work as a deterrent too, because a publisher who grasps how large those AI-feature impressions are will hesitate before flipping the switch. And the scale is no exaggeration — Google puts AI Overviews above 2.5 billion monthly active users, with AI Mode past the one-billion mark. As for attribution, the company points to the inline links and site previews it recently added to AI answers.
How the UK Moved Ahead of Everyone Else
The EU’s AI Act treats AI as a product-safety question; the UK’s digital markets regime treats it as a competition question — designate strategic market status first, bolt on conduct requirements second, iterate quickly. The CMA was careful to add that an SMS designation does not mean Google has acted anti-competitively; it simply arms the regulator with proportionate, evidence-based rules. For publishers, the leverage sits at the negotiating table rather than in court: the CMA’s release states plainly that the requirement hands news organizations “appropriate bargaining power” in content-licensing talks with Google. It slots into this year’s run of tighter terms and tighter oversight — pointing the same way as our opening-of-2026 outlook.
One more wrinkle: the order binds only the UK market, yet a control like this is difficult to build for a single country alone. Testing began with UK sites, and the rollout has since expanded worldwide.
The Takeaways for Builders and Content Teams
Three takeaways matter in practice. First, the opt-out has moved from convention into law: the old robots.txt-and-Google-Extended understanding is replaced by a regulator-backed switch that is expressly barred from serving as a punitive ranking signal. Second, attribution and AI-exposure metrics are now duties that can be audited, giving content teams measuring the AI search hit to their traffic an official data source rather than third-party estimates. Third, the precedent: should the UK model hold up, other regulators are likely to replicate the opt-out and attribution requirements fast. Teams building SEO tooling or selling content strategy services should put “AI feature impressions” into their data models now.