UK CMA forces Google to add publisher attribution and opt‑out in AI

Google must add clear publisher attribution and an opt‑out mechanism for its AI‑generated search features under new UK competition rules, with a nine‑month deadline to implement the changes【1】. The move targets concerns that Google’s dominance—over 90 % of UK search queries—lets it use publisher content to power generative AI without adequate credit or consent, potentially eroding traffic for news sites.

New conduct requirements

The Competition and Markets Authority (CMA) issued the order on 3 June, invoking its “strategic market status” powers that let it set ongoing obligations for firms deemed essential to digital markets【1】. Google must publish explanatory information on how it meets the attribution rule and how it measures the factuality of its generative AI outputs. It also cannot penalise opting‑out publishers by down‑ranking them in standard search results【1】. The regulator highlighted that inaccurate or vague attribution has been a recurring complaint from stakeholders【1】.

Publisher response and technical changes

Google has announced a testing phase for a new toggle in Search Console that lets site owners decide whether their pages appear in AI Overviews, AI Mode, or Discover’s generative features【1】. Sites that opt out will not receive traffic or impressions from those AI features, but the control will not affect rankings in traditional search【1】. Google also plans to increase the number of links shown in AI‑generated responses and provide more granular metrics on impressions and country‑level performance【1】. The company argues that excessive attribution could hurt user experience, while too little could push publishers to opt out entirely—a balance the CMA seeks to enforce【1】.

Market and regulatory context

The UK action follows similar scrutiny in the United States and European Union, where regulators are probing Google’s search dominance and AI practices【1】. By separating content crawling for ranking from AI training, the CMA aims to break the “trap” publishers face: either disappear from search or feed AI models that diminish traffic【3】. The UK’s Digital Markets, Competition and Consumers regime allows the regulator to impose and adjust conduct requirements without protracted court battles, contrasting with the US’s case‑by‑case approach【3】.

What to watch

• Implementation timeline – Whether Google meets the one‑month plan and nine‑month rollout for the attribution and opt‑out controls.
• Publisher uptake – The proportion of UK sites that activate the opt‑out toggle and its impact on AI‑driven traffic.
• Global rollout – If the CMA’s rules become a template for other jurisdictions, prompting broader regulatory action on AI search.

The CMA’s order forces Google to make its AI search more transparent and gives publishers a lever to protect traffic, but the effectiveness of the controls will depend on how quickly Google can deploy the technical changes and how many publishers choose to opt out. The broader question is whether this regulatory model will reshape the balance of power between dominant platforms and content creators worldwide.