In this episode, David Yelland and Simon Lewis are talking TikTok. In the US, the social media platform is facing an existential threat. But behind it is a world of Chinese PR that’s not making the headlines. How does it work? And what are all the western PR agencies embedded in China doing there? Also, as the risk of IT system crashes and cyber attacks escalates, David and Simon lift the lid on the role of communications in the booming cybersecurity sector. And following the short video of the Princess of Wales released on The Sun’s website, they ask if this is a PR master stroke, or something else. What is going on? Producer: Eve Streeter Editor: Sarah Teasdale Executive Producer: William Miller Assistant Producer: Sophie Smith Music by Eclectic Sounds A Raconteur production for BBC Radio 4