Britain's an island. It's very difficult to protect the border entirely.
Virtually everyone who lives in Britain holds a British or European passport although their forefathers may have come from other countries. Conversely many British people have emigrated to other countries since the end of the second world war. That is how the world economy works
Since the Labour party tried to alter the demographics of Britain to try and ensure that the Conservatives would never get elected. Immigrants tend to vote Labour.
Before people start reporting my answer or giving it the thumbs down the Labour party has admitted it.
Im not quite sure what you are trying to say here. If you go back far enough we all came from somewhere else. As part of the EU people from other parts of the Union are allowed to life and work here. Its not an invasion.
Define what you mean by 'British' people. Has any one ever stated you invaded Britain?
