UK CMA Imposes New Rules on Google Search to Protect Publishers

The UK’s Competition and Markets Authority (CMA) has imposed new conduct requirements on Google Search. These measures include providing tools for publishers to prevent their content from being used in Google’s AI features (AI Overviews) and requiring explicit attribution with clear links in AI-generated search results. The CMA stated that the rules were introduced in response to changes implemented by Google last month regarding AI search results.

The CMA has been monitoring the impact of Google’s inclusion of AI summaries in search results since May 2026, when the company announced the change. The new conduct requirements are grounded in Google’s designation as having Strategic Market Status (SMS), directly applying to its search business. CMA CEO Sarah Cardell commented, “This is the world’s first set of requirements imposed on Google’s search service, and they aim to support fair treatment and choices for businesses and consumers alike.”

Background of the Regulation

In May 2026, Google fully introduced a feature called AI Overviews into its search results. This feature displays AI-generated summaries at the top of search results, above the traditional list of links in response to user queries. Publishers have voiced concerns that these summaries could reduce traffic to their websites. According to a report by The Register, news organizations, in particular, have seen significant drops in traffic due to AI summaries, prompting the CMA to take swift action to address the issue.

The CMA stated, “Google has integrated AI features into its search and offers AI summaries that do not directly link to source websites.” It argues that if publishers cannot control how their content is used, the fair exchange of value is undermined.

Key Requirements from the CMA

The new conduct requirements consist of three main components:

1. Blocking Tools for Content Usage: Google must provide publishers with effective tools to prevent their content from being utilized in AI Overviews and other AI features. This enables publishers to block Google’s AI from using their content at their discretion.

2. Clear Attribution and Linking: Google is required to provide proper attribution for publishers’ content within AI-generated search results, including clear links. Previously, AI Overviews tended to summarize information without showing sources, which reduced traffic to publishers’ websites. This requirement aims to redirect traffic back to publishers.

3. Opt-Out Mechanism for AI Model Training: Google must offer publishers the ability to opt out of their content being used for fine-tuning AI models. This allows publishers greater control over the secondary usage of their data.

The CMA believes these measures will empower publishers, especially news organizations, to negotiate more effectively with Google regarding content usage.

Impact on Publishers

For publishers, particularly news media, this regulation represents a long-awaited step toward achieving “fair value exchange.” Google’s AI search has been a major source of traffic for many websites, but the presence of AI summaries reduced the need for users to visit these sites, leading to revenue declines.

The CMA estimates that tens of millions of search users across the UK will be affected. Cardell stated, “As features like AI Overviews rapidly transform online search, it is crucial that content publishers, including news organizations, have adequate negotiating power over how their content is used.”

A New Regulatory Framework

This move is based on the UK’s Digital Markets, Competition and Consumers Act, introduced in 2024. Following Google’s designation as having Strategic Market Status (SMS), the CMA implemented these conduct requirements for its search service. The law, which adopts a preemptive regulatory approach for dominant platforms, bears similarities to the EU’s Digital Markets Act (DMA).

Cardell emphasized, “We will continue to monitor emerging concerns and address them using the unique flexibility of the UK’s regulatory framework. Regarding Google’s search business, further measures will be announced within weeks.” This suggests ongoing oversight and the possibility of additional regulations.

Future Outlook

This regulation could serve as a precedent for international discussions about the role of AI in search and publishers’ rights in the AI era. The European Union is also investigating Google’s search practices, while the U.S. Department of Justice is addressing the impact of AI features in its antitrust lawsuit concerning Google’s search monopoly.

While Google has announced measures to mitigate the impact on publishers, such as traffic measurement tools for AI summaries, the CMA has deemed these insufficient. Direct regulation of AI-search interactions is rare globally, making this move by the CMA particularly noteworthy. Its potential influence on other countries will be closely watched.

Editorial Perspective

In the short term, the CMA’s conduct requirements will likely compel Google to undertake significant engineering changes. Specifically, providing tools to block content usage in AI Overviews and displaying clear link attribution will require adjustments to Google Search’s current architecture. Implementation may take several months, but Google will need to act swiftly. During this period, publishers should monitor traffic trends and leverage the opportunity to strengthen their negotiating positions. However, the effectiveness of Google’s “blocking tools” remains uncertain, and the industry will need to closely observe their implementation.

In the long term, this regulation could establish a precedent for value distribution within the search ecosystem in the AI era. The CMA’s indication of “further measures” suggests an ongoing effort to adjust the balance of power between publishers and platforms. Similar discussions may gain momentum in other countries, including Japan. However, regulators must be cautious—excessively stringent rules could lower the quality of Google’s AI search, potentially harming user experience. A balanced regulatory approach is essential.

From the editors’ perspective, while publishers now have the option to opt out, they must carefully assess whether this truly benefits their business. Completely blocking traffic from AI Overviews could reduce visibility in search results. Instead of outright bans, publishers might consider seeking appropriate licensing revenue for AI usage of their content. Negotiations with Google are just beginning, and the industry must take this opportunity to define what constitutes “fair value” in the evolving landscape.

References

• The Register: “Citation, please! UK regulator slaps Google with new publishing rules for search” - Published June 3, 2026
• Official CMA press release (if available)