It is completely disingenuous for an organisation like BAA to fail to provide effective security procedures for the quantity of passengers being processed (including T5 every time I have gone through the place), and then when this is highlighted in the media to get all uppity about any photographs taken of the nonsenses.
If they were REALLY concerned about keeping their procedures in security free from prying eyes they would arrange it so there were not hundreds of passengers all pressed together taking 20 minutes or more to absorb the whole experience. But that would cost money to organise it all properly, and spending less and less money is something BAA give more attention to than anything else. Including effective security.