What exactly needs saving here??
I try to support GA whenever possible, wherever its threatened, UK or France etc.... but I cant help but think that in this case, having clicked on the links and read a bit more besides, there isnt any threat to Biggin Hill at all. Infact if the owners/operators want to increase commercial traffic then GA should be supporting the objectors in this case because it will inevitably see GA being squeezed out of another aerodrome - as seen in the Southampton thread and numerous other cases in the UK.
Sorry BH, Im afraid I dont see anything to take issue with in this case...unless Im missing something glaringly obvous.
Regards, SD..