[skm]

This beautifully illustrates Thomas Schelling's racial segregation model, for which he coined the term "Tipping Point" 30 years before Malcolm Gladwell popularized it:

Schelling, T. (1969). Models of segregation. The American Economic Review, 59(2), 488-493

(Schelling won the Nobel Prize in economics in 2005)

[iuygtfrtgyhhgtf]

A time based view would be interesting.

The next generation moves away form these ghettos and assimilates into the rest of London, after a few generations there are only hotspots of the original immigrants left in these places and then usually only if there are strong religous reasons.

If you go into London through the east end (Brick lane etc) the names of pubs are Huguenot (from early 1800s) then there are names of Jewish merchants and tailors on the top floors of buildings (from the early 1900s) then the ground floor is now Bangladeshi.

[Someone]

For the Netherlands:

- by last name: http://www.meertens.knaw.nl/nfb/index.php?taal=eng

- by first name: http://www.meertens.knaw.nl/nvb/english

Most of it is Dutch only, but both have historical data (the one for first names in particular is nice)