The changing distribution of overseas born place of birth, 1971-1981 (Colour).

Three colour mixing of deviation from the expected for 129,211 census enumeration districts on an equal population cartogram software by author on an Archimedes computer.

There are several interesting shapes forming in this graphic. To begin with, the orange tinted ring around central London shows where those of African, Caribbean and Asian origins have moved to. The whiter centre shows the places they were leaving. The yellow patches point to the influx of Asian (mostly Bangladeshi) immigrants in the 1970s to East London, Sandwell in the West Midlands and the North East in general. The blue tints show renewed influxes from Ireland to Glasgow and the west coast cities in general. The statistics unfortunately combine those who came directly from overseas to their present abode, and those who have, in the interim, stayed elsewhere in Britain (or even left and returned several times).