Azeem Suterwalla and Will Perry have co-authored the public law and procurement law chapter of the Second Edition of the ‘Law of Artificial Intelligence’, which is published by Sweet & Maxwell. The chapter considers the increasing use by public authorities of AI, including commercial reasons to innovate with emerging technologies. The chapter covers the current relevant legal and regulatory framework and guidance for public authorities in England and Wales. It also identifies recent proposals for changes to that framework. It is hoped that this chapter will be relevant and informative to public authorities and those delivering public functions using AI, and also to private organisations seeking to supply to the public sector. The chapter will also be useful to parties who wish to carefully scrutinise the decisions of public authorities, including in the context of judicial review and public procurement proceedings.