Heathrow Harry
How much of that 52 billion do you think went to the French and German governments directly? Then how much tax did the workers pay on their wages? Then how much VAT did they pay on all the nice things they can buy? Road tax? Then there's the indirect benefits. Fuelers for the test aircraft, third party companies (Honeywell, RR, CFM, BAE etc etc) who employ more workers as a result of a company as massive as Airbus being in existence.
How much extra tax revenue does the British government get from non UK residents transitting through Heathrow? How many extra immigration officers/Pilots/Cabin Crew/Cleaners/Shop Workers/Mechanics/ATC/Caterers/Fuelers/Security/Baggage Handlers/Bus Drivers etc etc are employed because of them? How much Tax do they contribute to the UK economy?