The workshop will focus on mathematical modelling for behaviour, with three main themes: (i) Abstraction of real-world systems into mathematical models: (ii) Societal response to policy; (iii) Data needs. Much of the workshop will consist of invited and contributed research talks, and we will hold dynamic panel-based discussion sessions around key topics including engagement with government and public communication of modelling. Another key topic for discussion during the workshop will be the international vision for the research area. This workshop will take a global perspective, seeking to develop a roadmap for how the discipline can develop in the medium- and long-term. The strong interdisciplinary focus will aptly position workshop attendees to help steer the future development of the maths of human behaviour as a research area (with interdisciplinarity, internationalism and impact at the forefront).