jollyrog - I agree, although this is probably because the City flights often go more or less directly over my house and can be very loud indeed.

But I accept that because of their smaller size and engines they are overall less noisy than the Heathrow flights as PVP says, and the noise isn't going to be heard in as wide a radius as with larger planes. Ie. if you live a bit further down the road, it'll be much less of an issue. Pot luck I guess.