Ease the hostility my friend, that is why I wrote that I was being "just curious". I have a lot of respect to the attention to detail in the BA operations manual (as far as I have seen).
If an airport specifies that noise procedure A is to be flown, accellerating at 3000' then that is exactly what we do at my airline. From this thread I understand that BA does not do this. I am just curious why.
Mind you, a lot of airports specifically state ICAO procedure A as the norm for noise abatement so I think that is enough backup!