>>>Is the Governor of The Bank of England, Mark Carney,a Citizen of Uk ?
No.
>>>or will he need to apply for Citizenship, if he is not
No. He's simply here to do a job.
>>>Was he a Conservative in Canada. ?
Mark Carney has carefully avoided any overt links to any political party.
>>>Did he know Cameron and Osborne , before his Appointment?
While it's possible that they might have met, they've never been social acquaintances. He moves among bankers and finance experts, not politicians.
>>>If he has to apply for Citizenship do you think it will be granted?
Not applicable.
Mark Carney was regarded as the best candidate for the job my members of all political parties (and, indeed, by financial experts across the world). He was deliberated head-hunted but it was always regarded as unlikely that he'd actually accept the position (which he has only eventually done on the condition that his tenure will be a short one).