any luck with actually accessing the accounts?
The track record of the airport when it was open is there for all to see.
Limted routes, limited frequencies delivered using size limited aircraft on a limited runway.
As I said above, the market conditions since the last commercial flights have got significantly worse, not better. Unless Sheffield as drifted off to the Firth of Forth lately, the lack of a case for a London route also remains a big obstacle.
Of course, a new owner / backer could come in and buy the airport, with a reasonable upbeat business plan. Delivering on that plan is going to prove extremely difficult.