What would you sooner became of the Binbrook OM?
Sadly, it has been closed for many years now. I had the odd visit 15+ years ago and it had a tremendous atmosphere then - including the boots in the bar from Lightning ejectees.
But you don't have to leave an OM unoccupied for long before the building deteriorates to a level which makes its restoration prohibitively expensive. And Binbrook without aeroplanes would be just too depressing to contemplate....
So, knock it down and keep the memories as they were - or let it crumble away. I can't suggest the answer - can anyone?