According to the BBC, these images have been analysed and compared with detailed maps. Every different type of land has been awarded a classification and this permits scientists and environmentalists to obtain a snapshot of changing land use in the UK. Thus, conservationists can observe those areas that may be in danger of being swamped by the urban sprawl. Yet the urban sprawl hardly exists at all.
Actual built-on land in the UK comprises only around 6% of the total. The rest is made up of natural wilderness (35%), farmland (57%) and green urban areas (2.5%).
Not that us informed people didn’t know this already.