The UK's Competition and Markets Authority (CMA) is conducting an initial review on the development of foundation models, an AI technology that can be adapted to various tasks. The review focuses on competition, barriers to entry, impact on other markets, and consumer protection. Stakeholder submissions are welcomed until June 2, 2023, with a report expected to be published in September 2023. The CMA aims to inform AI regulation and make recommendations to the government and other regulators based on the findings. Further reviews or market investigations may be conducted based on the outcomes.