The Digital Regulation Cooperation Forum has published findings on how four UK regulators—the Competition and Markets Authority, the Financial Conduct Authority, the Information Commissioner's Office and Ofcom—are using generative AI in their work, moving beyond pilot projects into regular use across regulatory analysis, supervision and enforcement. Joint work over the past year has focused on governance, prompt design, detecting consumer harm and testing AI tools before wider deployment. Each member regulator has been testing, developing or deploying generative AI tools, supported by six cross-regulator deep-dive sessions examining risks such as hallucinations and bias. A central conclusion is that governance remains critical, requiring proportionate oversight, clear accountability and human review. The Competition and Markets Authority has developed agentic AI that can experience and record the consumer journey at scale to detect possible breaches of consumer law, which has already fed into enforcement activity, opening investigations into eight businesses and sending advisory letters to 100 others. The Financial Conduct Authority has tested whether large language models can be used for sludge audits.