(Bloomberg) -- China has detained the head of an overseas consulting firm for allegedly spying on the Asian nation for the British government, putting renewed focus on an industry targeted by Beijing’s national security crackdown.Most Read from BloombergMusk’s Drug Use Concerns Tesla, SpaceX Leaders, WSJ SaysBoeing Max Grounding Goes Global as Carriers Follow FAA OrderBoeing 737 Max Blowout Points to Pervasive FlawsChina’s spy agency said Monday that the UK’s MI6 intelligence service employed th