Both the Post and the Times ran reports on the "audit" of UK race relations. Their discussions focus on "white" and "black" groupings, in other words using the categories we're familiar with from the American experience. But the UK is not America, and the experience of race and ethnic divisions in Britain is quite different than that of America.
When you look at the British reports and the actual audit you see a somewhat different picture. For example, you've got 19 different "ethnicities" which were surveyed, including such categories as "White and Black Caribbean", "White and Black African", "Black Caribbean", "Irish", "White and Asian", and "Gypsy or Irish Traveller"