Britain's competition regulator said on Wednesday it has imposed new conduct requirements on Google 's search services, including allowing publishers to opt out of training the U.S. tech giant's AI models, as the watchdog ramps up its oversight. The Competition and Markets Authority has flagged concerns about Google's dominance in search services. Google accounts for more than 90% of UK queries, and the regulator had been consulting on the matter to ensure effective competition. The CMA on