Many, Kaz?
According to government figures the average for mixed race (diverse) families is below 2%. For other types of diversity it is about 1%.
If you were arriving from outer space and had been monitoring UK TV and the press and magazines (via the Internet) you would be led to believe that he UK was diversity Utopia - then you arrive and things are so much different. It is the alternative reality and its presentation that irks so many people.
It is not that the silent majority are against inclusivity, we are quite happy with it, but if we push back against the way it is being portrayed we are labelled as Luddite monsters and closet racists. The danger is that if people are continually told they are racists then some will say "Sod it, I might as well go the whole hog." I will not be one of their number, ever, but I do accept that some will be tempted. It is a very dangerous game to be playing IMHO.