[Ardent]

London extends in to urban scrawl in to the home counties, commuter belt and across the south east.

If London used the same metro area calculations as NY which are around six and a half thousand square miles or an area roughly the size of all three yorkshire ridings combined, then not just the home counties but the whole of south east england would have to be taken in to account, giving a population of around 18-20 million. In the London Home counties alone (which are basically the adjoining suburban counties surrounding London) there are betwen 7 and 8 million, and London's Greater Urban Area (continous urban build up beyond London) is around 9.3 million.