... and always has been. Londonistan was once Londoniopia:

A DNA study has confirmed that London was an ethnically diverse city from its very beginnings.

The first results are from four people: two had origins from North Africa, another was from Eastern Europe and one was a native Briton.

The researchers plan to analyse more of the 20,000 human remains stored at the Museum of London.

According to Caroline McDonald, who is a senior curator at the museum, London was a cosmopolitan city from the moment it was created following the Roman invasion 2,000 years ago.

"The thing to remember with the original Londoners is that they were not born here."

"Every first generation Londoner was from somewhere else - whether it was somewhere else in Britain, somewhere else on the continent, somewhere else in the Mediterranean, somewhere else from Africa," she said.

Working with scientists at Durham University and an ancient DNA lab at McMaster University in Canada, museum researchers were able to reconstruct the DNA of four individuals.

They come from a collection of 20,000 human remains from London stretching back 5,500 years.

http://www.bbc.co.uk/news/science-environment-34809804