I remember how long an ex-Flight Academy Scotland Katana sat at Perth.
And how little it was for sale for a few years later, even with a new engine!
The two Katanas at TV's were both registered to MD, not CFC. So I presume she "leased" them to her school. She should have. So no asset there.
ps. "My" aircraft are owned by a partnership which owns the airfield, for tax reasons - something to do with capital allowances - and not owned by the flying school which uses and maintains them, which is also a limited company. So there is nothing unusual in this sort of arrangement.
Most flying schools have very few assets, and seek the protection of limited liability in case all goes wrong.