Heathrow must be loosing Million's or even billion's.
Come to think of it so is every other company involved, BAA should have organized last night a VFR fly in £20-30 landing fee, £10-15 a touch and go for Heathrow. The amount of traffic they would have got would probably utilise both runway's.
Saying that would traffic have a limit of coming in due to ANO rule 5?
Such as if on 27's having a short final and starting base .5 of a mile out to avoid Hounslow.
They would have made something at least.