That's not exactly true, although generally true. In London probably half of blacks marry out (and we are not even talking about dating). Look at these stats from the British government: http://www.statistics.gov.uk/cci/nugget.asp?id=1090 Black carribean male - 29% female - 20% Black African male - 18% female - 15% Other Black male - 48% female - 34% That's quite high, I imagine in London it is higher, this is national for England and Wales only.