It includes most of the Greater London region - omitting most of its woodland, small, buffered districts, the Lee Valley Park, and the two largest sewage treatment works serving London by the River Thames.
As a selective grouping of relatively low- to mid-density (and some high-density) output areas, each consisting of roughly 120 households,[REF] it can be compared to the Greater London region, which covers and contained 8,173,194 residents at the time of the 2011 census.