Ian Duncan Smith, a senior British lawmaker and former leader of the ruling Conservative Party, raised the alarm in Parliament on Thursday, saying that MI5 had warned House Speaker Lindsay Hoyle that an "agent of the Chinese government" has been actively working to "subvert" the processes of Parliament.
"This is a matter of grave concern," Duncan Smith said.
Lee is extensively connected to "individuals across the UK political spectrum, including through the now-disbanded All-Party Parliamentary Chinese in Britain Group, and they may aspire to establish further APPGs to further the CCP's agenda," MI5 said.
CNN has reached out to the Chinese embassy in London for comment.
Duncan Smith asked that, in light of the incident, parliament consider beefing up security and deport the Chinese agent. Duncan Smith said he heard the individual would not be deported and questioned why further action would not be taken against "an agent of a foreign despotic and despicable power."
Duncan Smith is a vocal critic of the Chinese government. He was sanctioned by Beijing last year for his comments on the treatment of Uyghur Muslims in Xinjiang and is barred from entering the country. Chinese businesses and citizens are also prohibited from doing business with him.
"This is surely not good enough," Duncan Smith said on Thursday.
MI5 said that anyone who has been contacted by Lee "should be mindful of her affiliation with the Chinese state and remit to advance the CCP's agenda in UK politics," and to contact the Parliamentary Security Director if they received "concerning or suspicious contact."
