Embattled Kwasi Kwarteng is facing questions over allowing a firm to continue supplying UK police radios despite a US security blacklisting for its Chinese owners.
Chancellor Mr Kwarteng – whose mini-Budget has sent markets spiralling – signed off on security pledges from UK firm Sepura and its parent Hytera Communications last year.
His move as Business Secretary was taken despite Hytera facing espionage charges in the US and being called “an unacceptable risk to national security”.