Britain has been a hub for sea travel ever since the land mass broke away from mainland Europe. Never in it's history has the UK had a completely closed imigration policy therefore I do not believe it is really possible to answer this question.
British... and I think just about every other nationality in some numbers. Supposedly the most multicutural city on Earth according to the stats
Probably hundreds, but in very small numbers.
193
193
There are over 190 different nationalities represented in the United States.
The people who live in Great Britain have many nationalities which is a legal concept. Most have United Kingdom nationality.
Generally speaking, the English, Irish, Scottish and Welsh.
45.
there are millions
3
11 nationalities
67
VARIOUS
== The many different nationalities in the empire.===
No.
around 150 according to official statistics