Heathrow last week "published" the latest quarter's results (Q3 2018) from its flagship Fly Quiet & Green environmental programme.
Or, rather, it didn't:
It appears that Heathrow's response to repeated accusations that the FQ&G results are deeply flawed is simply to conceal them from public view for long enough, presumably, for its
PR machine to circulate the fiction to editors around the industry before the results are exposed to public scrutiny and the whole house of cards comes tumbling down.
Based on previous quarters' results we can fully expect that, if and when the Q3 results are finally made public, Heathrow will be found to have inflated airlines' scores to typically around 40% more than their environmental performance would merit if it had actually followed the methodology that it claims to be using.
Jolly poor show, chaps.