Hangar 6
please correct me if I'm wrong here but there may be more to this than meets the eye. MOL might be onto something here. when EI had that building years ago there was room on the ramp for 3 widebodies and as they were part of the hangar's site there were no fees for parking aircraft there. It's also very close to the access to the old smaller runway that commuter aircraft used to use.
Add the large amount of office space that's there and you could possibly see FR converting it into a low cost passenger terminal as well as operational hangar. MOL had looked a few years ago to build a low cost terminal. Maybe this could be the way to get around it and give the DAA a run for it's money.
I've also heard as a RUMOUR that EI were going to move their entire headquarters operation to the hangar and redevelop their current head quarter building into a hotel to lease out to someone else. That was something that Willie Walsh has considered during his tenure there. Hence EI's possible requirement for Hangar 6.
As I said some of this is speculation but I'm nearly sure that the parking of aircraft by hangar 6 site did incur parking fees.