In answer to your question creeky it depends upon how you judge things. Scotland benefits in many ways from the population density in particular the natural environment, despite this,in and around major towns and cities driving is a chore, commuting is a chore. In England every patch of land is subject to the claws of developers, all keen to cash in on our housing boom, this has decimated wildlife and leaves kids playing on their Xbox rather than outside, why do we need all these new houses, where are these new home owners coming from? The indigenous population is pretty static give or take the age profile yet we keep building, Why? What is an acceptable density in your eyes?