"Stirring up racial hatred", even merely possessing material that could do so, is a crime in the UK: https://www.thelawpages.com/criminal-offence/Possessing-raci...
Burning the Koran is also illegal: https://spectator.com/article/england-now-has-a-blasphemy-la...
Viewing "far-right propaganda" carries a 15 year jail sentence: https://www.theguardian.com/uk-news/2017/oct/03/amber-rudd-v...
True factual statements such as "young white girls are being raped by these grooming gangs" come with a nearly 1-year jail term: https://www.bbc.com/news/articles/ce328p9330eo
Note that most of the time, articles are happy to omit actual quotes, instead parroting the prosecution's description of the speech in question, using vague terms such as "racially aggravated comments" or "inciting racial hatred":
https://www.bbc.com/news/articles/c3rq8r4jdgno
“We will be a minority in our homeland by 2066” is accurate: https://www.independent.co.uk/news/uk/home-news/white-briton...
Burning the Koran is not a statement of fact, so it cannot be disinformation.
"young white girls are being raped by these grooming gangs" is also accurate (though the precise number is contentious, mostly because the police turned a blind eye, or even actively aided the gangs): https://www.ibtimes.co.uk/britains-grooming-gang-scandal-rep...
So can you be more specific in what you were referring to as being "disinformation"?