The Long newton interchange is not being constructed to serve the Airport as such.It is there to facilitate the development of "the site" which includes the North Side Business Park.It is very debatable how much of their own money the airport owners are putting into the proposed developments.
The South side proposals may or may not materialise.The fact is that once the public bodies have put in all their preparatory infrastructure what is left becomes a very desirable ,and highly valued, site.I suggest a quick google of Peel Holdings and a trawl through the web sites will paint you a clearer picture of what this company is about.They are, after all Manchester based, and I suspect have few allegiances to Teesside.
And I would still love to know why the changes to Globespans flight schedules.Lack of ATC perhaps? Does anyone know?