The deviation from expected levels are shown, superimposed as rings around the 64 counties on the equal population cartogram — software by author on an Archimedes computer.
This method does not work too well. Although some sort of pattern can be discerned, the use of these symbols breaks up the picture and fails to produce an overall impression. The success or failure of an image often depends on these two factors. The counties with dark cores and edges in the North were originally doing badly, recovered relatively (as everywhere went into recession) but are now back to where they started. Oxfordshire is an interesting anomaly, just south-east of Birmingham — it has improved its position steadily, relatively, throughout the period. Greater London, conversely, has been getting worse.