@Stan
I don't think IoW has many immigrants compared to the UK average. Just across the water in Southampton you have an immigration population of 20,000 largely of Poles.
On jayborg it show 9 congregations - one of which is a full Polish congregation - and the following language groups:
Punjabi/Tagalog/Romanian
Portsmouth has the following groups:
Polish/Chinese/Portuguese
So as a guesstimate let's assume that those 9 Southampton congs at 75 each equal 675 publishers - let's further guess that the Polish congregation has 40 and each language group has 10 - that means at least 10% of Southampton's jw population is immigrant and if the Polish congregation is 60 plus then more like 15%.
Now think of London, Birmingham and the Midlands ...