The UK’s Competition and Markets Authority has ordered Google to let publishers opt out of having their content used in AI search features, including AI Overviews and AI Mode, without dropping out of Google Search altogether. The regulator calls the remedy a world first. Google has nine months to implement it.
A first binding publisher remedy for AI search
The CMA announced the conduct requirement on 3 June 2026, imposed under the UK’s digital markets competition regime that came into force last year. The regime lets the regulator set specific rules for companies it designates with “strategic market status,” a status the CMA has applied to Google in general search services.
Under the ruling, UK publishers will be able to control separately whether their content is used for AI model training, including fine-tuning, and for “grounding” AI answers, both inside and outside general search. Those controls will operate at the whole-domain level and the individual-page level. Google is specifically barred from penalising the search rankings of publishers who opt out, and must attribute publisher content with clear links wherever it appears in AI-generated results.
Google has nine months to roll out the changes and must submit and publish regular compliance reports to the CMA. In a blog post responding to the order, Google said it is beginning to roll out grounding controls to a subset of UK website owners and will release them globally after testing; the company has not said whether the training and fine-tuning controls will also expand beyond the UK. The remedy follows publisher complaints that AI Overviews have cut click-through traffic, and that opting out of AI use previously meant opting out of Search entirely.
Source
The order was announced by the CMA on 3 June (CMA secures fairer deal for publishers and improves Google search services in UK) and detailed in trade coverage by VideoWeek and Press Gazette. CMA chief executive Sarah Cardell said: “With features like AI Overviews rapidly reshaping online search, it is crucial that content publishers, including news organisations, have appropriate bargaining power over how their content is used. At the same time, these measures will help tens of millions of UK search users better understand and trust the information presented to them.”
Industry context
The ruling lands as AI-mediated discovery becomes the default first step in research. Google’s AI Overviews and AI Mode increasingly answer queries on the results page itself, and publishers across sectors have reported declining click-throughs even when their content informs the answer. The CMA’s intervention is the first binding attempt by a major regulator to separate two things Google had bundled: appearing in traditional search, and feeding AI features. For marketers, it formalises a distinction that has been building for two years, namely that visibility inside AI answers is now a separate discipline from ranking in classic search results. Our own reporting found AI search has already overtaken SEO as the top B2B content distribution channel, which is what makes this ruling matter well beyond the news sector. Not everyone is convinced the remedy bites: Tim Cowen, co-founder of advocacy group Movement for an Open Web, argued the nine-month timeline is too slow, noting that a harm publishers say began years ago will go unaddressed until 2027 and that there will be no way to judge whether compliance worked until then. The decision applies only in the UK for now, though Google has signalled parts of it may go global.
Talking Shift
Talking Shift, the Start Some Shift point of view. The opt-out is, first and foremost, a publisher’s defensive lever: a way for news organisations to claw back bargaining power over content that AI engines consume and rarely send traffic back for. But established B2B brands should read the signal running the other way. The CMA has just confirmed in regulation what buyer behaviour already showed, that AI search is now the front door to the buying journey, and that being used by an AI engine is a distinct outcome from ranking in one. Start Some Shift’s view: for most B2B brands the move is not to disappear from AI answers but to become the source those answers cite. The opt-out exists to protect publishers who are being extracted from, not brands still fighting to be found. The brands that win the next two years will treat AI grounding and attribution as a channel to be earned, not a leak to be plugged, the same brand-strength logic that put the most valuable B2B brands at the top of this year’s ANA Masters ranking.
Practical implications for B2B marketers
This ruling is UK-specific and aimed at publishers, but it reframes how every B2B marketing team should think about AI visibility. Concrete moves:
- Audit how often your owned content already appears, and is attributed, inside AI Overviews and AI Mode for your priority queries.
- Separate your AI-visibility strategy from your classic SEO reporting, and track citation and attribution as their own metric.
- Decide deliberately whether any gated or proprietary content should be available for AI grounding, rather than leaving it to default settings.
- Structure content for machine extraction, with clear answers, defined terms, and source-able statistics an AI engine can lift and credit.
- Monitor your analytics for AI-referral patterns, not just organic search clicks, as the two diverge.
- Brief leadership now on what a global rollout of these controls would mean for your content’s reach and licensing position.
What to watch next
Google’s nine-month clock runs to roughly March 2027, with compliance reports along the way and the first real test of whether opt-outs actually shift publisher traffic. Watch whether Google extends the training and fine-tuning controls beyond the UK, and whether other regulators in the EU or US move to copy a remedy the CMA is calling a world first.
