Joking aside, check the following out for info on Airbus
As for why BA
are in Cardiff... skilled workforce in South Wales, cheap land, good incentives etc..
As for why Airbus will never be there... it's a maintenance base, Airbus already have manufacturing plants elsewhere etc..
As for why Airbus final assembly is in France & Germany... because the UK never joined the programme earliy enough and was never a major partner - poor strategic planning by the then governments....
I don't like signatures...