In the latest episode of Double Jeopardy, hosts Ken Macdonald KC and Tim Owen KC discuss the implications of the recent Chinese spy case involving Yang Tengbo and Prince Andrew.
Looking at the role of the Special Immigration Appeals Commission, they consider the sensitive role of national security in immigration law, Britain's evolving view of business relationships with China, and MI5's safety first approach to foreign influence.
Sticking with national security, they discuss the trial of the GCHQ analyst Katherine Gun, who was accused of leaking a classified document to the press. Ken explains what led him to drop the case against her, and the role of the security services in that decision.
Finally, they look at Elon Musk's increasingly bizarre interventions into UK domestic politics, and consider Keir Starmer's response.