I have to confess that i'm largely with ZH875 on this.
It's long been my view that ABCT does little or nothing but spend its funds on putting generic blocks of stone around the country and getting Mr Bannerman's picture in the paper.
There is no historic value to these memorials. They contain nothing personal or relevant to the airfields or people and the majority of the text on them refers to the ABCT and Mr Bannerman rather than the airfield itself.
I'd rather people donated to their local aviation museum than paying for a lump of granite to be put in a field that says little more than "there used to be an airfield here".
I'm afraid it comes across very much as a vanity project.