This podcast from Transport Security International Magazine focuses on the UK government’s new guidance paper on behavioural detection in security contexts, particularly within the aviation industry. The podcast highlights the ongoing threat of terrorism and hostile activity in aviation and explains how behavioural detection can be used to deter, detect, and deny hostiles from operating. The guidance paper provides practical advice on how to implement behavioural detection effectively, addressing issues such as training, procurement, deployment, and the limitations of the approach. It emphasises the importance of a layered approach to security that includes both technological measures and human interaction. The podcast concludes by urging readers to refer to the guidance paper and implement its recommendations to maximise the potential of behavioural detection while mitigating risks and ensuring its effectiveness.