To me it's unfortunately of little relevance that certain small business are in a small way contributing revenue to a loss making business. The fact is that from a trading perspective DTV is in a loss making situation.
Contracts and agreements either expire eventually or can be worked around. I am unclear as to what "aviation only" business plan has been put forward that will at some time in the future reflects a sustainable business in it's own right. As for current activity, then surely the DTV - Aberdeen route is exposed, and as to references ref Cobham / MOD, then again no monopoly at DTV given the proximity of Leeming ?
It may take some time, & Peel have the patience to wait it out, but eventually a situation will arise "one way or another" providing the oportunity for Peel to divest itself of all unwanted activity on the DTVA site.