It's Ann Gloag's ball (the airfield) and if she wants to stop someone playing with it then that is her, as the owner's, prerogative!
Well if the reports are true, that she bought Manston for one pound in full knowledge that it was losing money then it would be a reasonable assumption, based on her transport industry background, that she was expected to turn the airport into profit or sell it on.
But she has done neither, people on the ground at Manston should know if she made any realistic attempt to increase business and revenue however, by all accounts, she was offered five million for her one pound outlay and she refused to sell that would in turn have allowed the airport to stay open.
Sometimes the law isn't always "black & white", sometimes "common sense" becomes applied and in this scenario I would suggest that a "deception" has taken place, it was Manston airport she bought for a pound, not X number of acres of real estate, and nothing has changed, she knew it was losing money when she bought it and that's why she got it for just one pound.
So her deception, her greed, has put other honest businesses and individuals out of business and/or out of work and I'm not sure a court will look too favorably upon her actions.