Law of the land Sir...
Hate speech laws in England and Wales are found in several statutes. Expressions of hatred toward someone on account of that person's colour, race, disability, nationality (including citizenship), ethnic or national origin, religion, or sexual orientation is forbidden...
As that Evening Standard article posted above concludes...
The Home Office spokeswoman said: “Both individuals were refused on policy grounds that their presence in the UK was not conducive to the public good.”
Just about sums it up
Fuss about nothing. We've got enough shit-stirrers here...