AI-2019 is the 39th Annual International Conference of the British Computer Society's Specialist Group on Artificial Intelligence (SGAI), which will be held in the Peterhouse College in Cambridge. The Conference is the leading series of UK-based international conferences on Artificial Intelligence and the longest running AI conference series in Europe. The Conference includes a range of AI technologies and application areas. Its principal aims are to review recent technical advances in AI technologies and to show how this leading-edge technology has been applied to solve business problems. It offers opportunities to learn about the developments in AI and to share experiences in the practical issues of developing AI-based systems.