The elongated conurbation that stretches along the south coast from East Sussex to Dorset provides a model that could be replicated inland along existing motorways. Instead of growing outwards from towns and villages as happened on the coast, they should skirt round the existing villages, leaving gaps of open country at least half a mile wide.
There are about 500 miles of motorway in southeastern England suitable for this treatment. With continuous conurbations about a mile and a quarter wide, they could easily accommodate 600,000 homes without adding to any towns or villages or encroaching on so-called "brownfield" land, much of which should be used for the benefit of people living near it.
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