The pandemic has highlighted the critical role of international collaboration for managing the risks that the UK faces. Given the increasingly interconnected nature of our world, several of the main risks facing the UK may originate abroad and, if they materialise, will require a coordinated international response. To detect them and respond to them effectively, government needs to strengthen the exchange of information with other countries, cooperate on horizon scanning and the early detection of threats, and learn from the experiences of other countries. It will also need to foster international debate on medium and long-term existential risks to humanity, which can only be addressed through concerted global action. Promoting greater international collaboration will require the UK to play a more prominent role in international forums, such as the World Health Organisation. Recommendation: Government should set out how it intends to drive greater international collaboration on risks, including exchanging information on threats, promoting and integrating mutual learning and coordinating responses across borders.