3 Quick reseach (p. 139)
How many people of Caribbean heritage are there in the United Kingdom today? Where do most of them live?
The first two websites give basic statistics, which must be combined for the total number.
The following three give the basis for answering where they live.
Black or Black British: Caribbean (Persons)
Mixed: White and Black Caribbean (Persons)
Wkipedia article 1
Wikipedia article 2
Wikipedia article 3