Cobweb of flows - The Visualization of Spatial Social Structure - page 195

Figure 6.19 Locally many moves were constrained by the council house sector to
remain in particular bundles of districts or within London boroughs. Surrounding
these is a ring of blues and greens, dashed with orange and yellow towns. People
move, but they tend very much to move to the same type of estate they left, and
so, despite a lot of movement, the spatial class structure is maintained.