Nope, it is the EU nationals, that's part of the reason why people voted for the Brexit.
In addition to flooding legally into the country, many are also legal health tourists.
They come to the UK to give birth for example get the free medical care then return
back to their EU countries without paying a penny or paying any taxes.
There was also also a massive problem where EU nationals came to the UK registered with
a doctor then the left a week later. Then they just flashed their registration card in their
own country, got free medical care and their country charged the U.K.!
NHS charged by foreigners for care in their OWN country thanks to loophole | Daily Mail Online
There are parts of Britain with a high Asian population as you say, but there are also parts of
Britain with a high EU population where all the shops are Polish.
There is also a big problem with Romanian criminals, people who don't understand the defination
of crime, they commit crimes in the UK which would be overlooked in Romania. So when they get
arrested they are shocked. There was a documentary on TV a whole back specifically about the
Romanian crime wave affecting the country and all the resources it was taking up.
Number of Romanian crime suspects arrested has surged by 80% in some areas | Daily Mail Online
Read any newspaper or watch UK TV and you will find the focus is in EU nationals causing problems
rather than the Syrian refugees etc.