The chapter unravels the increasing concerns regarding Chinese spying activities in Britain, including hacking and espionage aimed at critical figures and armed forces, leading to escalating tension between the two countries. It delves into instances of Chinese espionage targeting British politics, economy, and civil society, amid allegations of foreign interference and aiding Chinese intelligence services. Legislative measures like the National Security Act of 2021 and the National Security Investment Act are highlighted as steps taken to address national security risks posed by Chinese influence.