"From the bginning, this feller has been insisting - abusively - that immigration has nothing whatever to do with Brexi"

would you care to point out where? or is it yet another "once upon a time" jimmie story? Go on! try to prove me wrong!

I believe the argument is about uncontrolled immigration. This is probably a proposition a little too subtle for you. You really do spout some rubbish at times. What on earth has sharia law got to do with the subject? How many more bits of other threads are you going to drag in to pad out your ludicrous postings?
Migration figures are notoriously difficult to calculate, for illegal immigrants it is pure guesswork.
Jack Dromey, Deputy General of the Transport and General Workers Union and Labour Party treasurer, suggested in May 2006 that there could be around 500,000 illegal workers. He called for a public debate on whether an amnesty should be considered. Analysis suggests that if the migrants granted amnesty were given access to healthcare and other benefits, the net cost to the exchequer would be £5.530 billion annually. As the food industry claims to feed around 10 million more than the official figures show, the estimated cost of an amnesty could be considerably higher. We are very lucky we live in a society where roadside ID checks are not the norm, as in the Irish Republic. The downside is that an unknown number of ghost illegal immigrants exist under the radar.