Google has committed to letting UK websites opt out of its AI Overviews feature - the AI-generated summaries that appear above traditional search results - after mounting pressure from the UK's Competition and Markets Authority (CMA).
The CMA designated Google with "Strategic Market Status" in 2025, a classification that gives regulators direct oversight of the company's search and advertising business. In January 2026, the CMA launched a consultation proposing several measures, including giving publishers control over whether their content gets used in AI-generated answers. Google's response: it will build the opt-out mechanism, though it has not committed to a specific launch date.
The stakes are concrete. The Publishers Association reported a 19% decline in click-through rates to academic reference services, attributing the drop directly to AI Overviews cannibalizing traffic that used to flow to publisher sites. Industry groups including the News Media Association want the CMA to cut the proposed six-month implementation window in half and require Google to fully separate its regular search crawlers from its AI training crawlers. Right now, blocking Google's AI crawler also risks hurting your regular search rankings - a problem Google says it will address but has not yet solved.
Google, for its part, warned that too much transparency around how its ranking systems work could expose them to manipulation. The company also said it would make it easier for users to change default search engines on devices "without the annoying interruptions," though again, no timeline.
This is the first time a major regulator has forced Google to offer publishers a real exit from AI-generated search features. The EU and US have talked about similar measures, but the UK's SMS framework gives the CMA actual enforcement teeth. For publishers watching their referral traffic shrink month over month, the opt-out cannot come soon enough. The open question is whether opting out of AI Overviews will quietly tank a site's visibility in regular search results - Google says it will not, but publishers have reason to be skeptical until they see it in practice.