Did you see my article about Norwegian elevation meshes?
I'm very interested in this 1 m Norway data.
Is this kind of data always based on a survey of the ground elevation? I have 2 reasons for asking: (1) I would have thought it would be quite difficult to "see" the ground if the area is built up. (2) If the data were high enough res (ideally better than 1m - but 1 m might suffice) it could give a 3D effect to man-made structures - which could perhaps be useful in the context of flight sims. Obviously, since the aerial images contain no info about vertical surfaces, it wouldn't be much use for buildings - but it might model structures such as Hadrian's Wall or maybe even forests.