Starmer, spies and China’s threat to national security

The prime minister’s been asked to ‘explain himself’ after the UK’s top prosecutor blamed the collapse of a China spy trial on the government - for not labelling China a risk to national security. 
 
But Sir Keir Starmer blames the previous Tory government. 
 
A parliamentary researcher and his associate were accused of passing on “politically sensitive” information to a member of China’s ruling politburo – so why won’t it go to court?   
 
Niall is joined by political correspondent Mhari Aurora and the former head of MI6 Richard Dearlove.   
 
Producers: Tom Gillespie & Emily Hulme 
Editor: Mike Bovill