Manchester, Liverpool, and Birmingham don't?
I don't know much about the UK, I admit, but aren't those some of the largest cities in England?
He's [Quakers] right, sort of, the gross value added per head of the population is greatest in these three areas.
heres a link to the study: http://www.statistics.gov.uk/pdfdir/gva1207.pdf
As can be seen in Figure 1, these three regions on a per head basis make up the net contributors to the country.
Note that Scotlands doing quite well as the fourth in terms of gross size of contribution but its still not a net contributor.
If the regions are broken down even further the top three contributors are the Inner City of London, Berkshire, Edinburgh. This probably stems from all the rich companies headquartered here and the rich living in these areas.
As always checking the annex and the problems with the data is important. In this case the region analysis of the country suffers from some lack of holding variables constant. aka Scotland is the largest area in the region analysis, but a small population (lower pop density in the UK if I remember correctly). London has the smallest area but the second highest pop (South east has the largest pop). Northern Ireland has the smallest population but of that population it has a much higher percentage of 16 or under than the rest of the UK (depressing its GVA).
Not to mention that a company headquartered in London and drilling Scottish Oil, adds to Londons GVA...

