Hardly a pro-Heathrow or a neutral position is it!
I don't know what constitutes a "neutral position" in this context, but it's perfectly possible to be simultaneously pro the continued operation of the airport and anti its expansion. For example, that's the standpoint of pretty well all the local authorities surrounding the airport, as well as the main campaign groups.
You appear to have been taken in by the "whoever is not with me is against me" fallacy (or "expand or die", as the airport rather disingenuously puts it).