I think people in Britain don't hate them but are fed up of the narrative that this country is racist, when the vast majority of us are not. Or the focus on empire, as if Britain was the only nation to have one or to have been involved in the slave trade. It's not as if America is Utopian in that regard, yet the inference is that America has offered them freedom from the awfulness that is life in the UK 
It's a bit galling, when they are happy to keep and use the titles and monetise their association with this awful, outdated system that they had to flee from!
The RF and Britain was so horrible, giving them a lovely home and a big state wedding and titles and status. How very dare the RF/Britain expect them to do anything in return!
Yes, our press can be awful, but foreign press isn't better!
I'd like to hear the perspective of all the staff who have worked with them in the UK. Or what really happened about the wedding tiara - did H really say that what M wants, M gets? And what happened with Kate that resulted in one of them crying.