How ethnically diverse was Roman Britain?

Let's not forget that migration, trade, and war had major impacts on the diversity of background for the 'British' people.
Think resources from ancient times up to and including the industrial age.

The posting of the various auxiliary units to Britannia is the biggest clue to what non island genes were being spread about. The unit inscriptions of Hadrian's Wall for instance indicate units recruited from all over northern, central, south eastern Europe, north Africa, and the Middle East...that of course does not inc merchant sailors from all over the Med basin.

Not sure what someone is trying to prove here but the overwhelmingly majority of folks going there for any reason would have been white as the Empire's contacts w/actual black Africans for instance was very limited.

Interesting, but a bit misleading from Prof. Beard. While the DNA evidence will provide proof, her first arguement discussed inscriptions and names. (which is the weakest arguement) While, these names could possibly provide insight into one's origins, they could be totally false. In fact, Scipio Africanus or Scipio the African (the famous Roman general and Consul) was not from Africa. His "African" agnomen was due to a major victory that he won in Africa. Roman Britain may or may not have been ethnically diverse, but what is true is that "historians" will manipulate "facts" in order to shape common knowledge.