The UK's Competition and Markets Authority has ordered Google to let publishers opt their websites out of AI Overviews and other AI Search features, in a legally enforceable conduct ruling published June 3, 2026. Website owners can also block their content from being used to fine-tune Google's AI models, and Google must clearly attribute and link to publishers whose content appears in AI-generated answers. The CMA called it a world first.
The mechanism is a new toggle inside Search Console that lets publishers manage how their content feeds AI Overviews, AI Mode, and AI Overviews in Discover. Opting out forfeits traffic and impressions from those generative features, but Google has confirmed the choice will not be used as a ranking signal for ordinary search results. New Search Console insights will also show publishers which of their pages appear in AI responses and in which countries.
“In a world first, publishers will now have effective tools to prevent their content being used to power AI features in search, such as AI Overviews”— Competition and Markets Authority, UK competition regulator
The CMA framed the rule as a structural correction rather than a one-off concession, and tied it to Google's designation under the new UK digital markets regime that took effect earlier this year.
Key facts
- 01The UK CMA ruled on June 3, 2026 that Google must let publishers opt out of AI Overviews, AI Mode, and AI Overviews in Discover.
- 02Publishers can also block their content from being used to fine-tune Google's AI models, via a new Search Console toggle.
- 03Google says the opt-out won't be used as a ranking signal for non-AI search results.
- 04Google has begun rolling the controls out to a subset of UK website owners, with global availability planned after testing.
- 05Google had previously rejected giving publishers this level of control, citing AI Search 'evolving into a space for monetization.'
Google has begun rolling the controls out to a subset of UK website owners and plans to make them globally available after testing. That phasing matters: the CMA's order applies to Google's UK search service, but the company's engineering response is effectively a worldwide product change, because maintaining two separate publisher-control regimes is operationally messy.
The political backdrop is the publisher revenue crisis that AI Overviews has accelerated — what the industry has been calling Google Zero, the prospect of search delivering answers without sending clicks. AI Overviews summarise content directly on the results page, and publishers have spent the past 18 months arguing they are being scraped for training data and then disintermediated from the audience that data was meant to reach. The EU has its own investigation underway on similar grounds.
Google had previously rejected giving publishers this level of granular control, with the company reportedly describing AI Search as 'evolving into a space for monetization.' The CMA's order overrides that position in the UK and gives news organisations a concrete lever in negotiations over licensing deals — until now, the only way to keep content out of AI Overviews was to block GoogleBot entirely, which also removed the site from regular search.
“The legally enforceable Conduct Requirements for Google Search published today are a significant step towards leveling the playing field and building a fair, transparent digital economy where premium content is properly respected and fairly compensated”— Theo Bamber, News Media Association CEO
The News Media Association, which represents UK news publishers, welcomed the ruling but flagged enforcement as the test.
CEO Theo Bamber added that the rules' success 'relies on efficient implementation, robust enforcement and the ability to adapt and strengthen the rules if they are not working properly, in a fast-moving technological environment.' Translation: the toggle is the start, not the finish, and the CMA will need to keep pace with how Google rewires its AI Search stack around it.
The open questions are commercial. If a meaningful share of major UK news publishers flip the opt-out on, AI Overviews loses access to the most authoritative current-events content in one of Google's largest markets, which weakens the product. That, in turn, gives publishers more leverage to demand paid licensing deals rather than scraping — which is precisely the outcome the CMA is engineering. Whether Google responds by paying, by routing around UK publishers, or by quietly degrading AI Overviews in the UK is the next thing to watch.
For the wider AI industry, the ruling sets a template. Regulators in the EU, and likely elsewhere, now have a working example of forcing a dominant search provider to separate the opt-out for AI features from the opt-out for search indexing. Anthropic, OpenAI, and Perplexity all rely on similar publisher content for training and retrieval, and a granular opt-out norm — distinct from robots.txt — is exactly the kind of standard that spreads once one regulator codifies it. The cheap era of AI training data ends one jurisdiction at a time, and the UK just moved first.
Working on something we should cover, or seeing a story we missed? Send leads, documents, or feedback to hello@aichatdaily.com. For sensitive tips, see our secure tips page for Signal and PGP options.
Spotted an error? Email hello@aichatdaily.com with the URL and the issue, or read our full corrections policy.
