Its got nothing to do with the Airport of the flight companies you clown. Its to do with a quality of fuel concern at Stanlow Oil Refinery, What would you like the airlines to do?, fill up with 4 star?, Aviation fuel has got to be absolutely 100% fit for purpose, Its not like putting a duff gallon in your noddy car or running out of fuel at the lights, if the fuel system goes wrong with these machines, its goodnight vienna, And before you ask how i know, i am at stanlow right this minute looking into the problem.