The BLM movement in England has become quite controversial the more people learn about its specifics there. Including that the BBC is stepping back from showing outright support:

Here's more on why

Controversial Black Lives Matter leader remains defiant as support ebbs away
Joshua Virasami's attacks on Israel and outspoken views on policing are turning supporters against the Black Lives Matter campaign in the UK

By Bill Gardner and  Craig Simpson 1 July 2020 • 8:21pm

To be fair to Joshua Virasami, a key leader of the UK’s Black Lives Matter movement, he has never attempted to hide his politics.

For the past decade Mr Virasami has made little secret of his hatred for capitalism, the police, the media, greedy landlords, airports, and Tories.

But now the 30-year-old activist and his fellow BLM leaders face a hemorrhaging of support and accusations of hijacking George Floyd's death after they tweeted attacks on Israel, and calls to “defund the police”.

Mr Virasami is one of the only BLM UK leaders whose name has been made public. Most of the others fear “far-Right” reprisals if identified, the organisation has said.

After attending a Catholic comprehensive in London, and later briefly studying at the University of London, Mr Virasami made a name for himself in far-left circles as a fiery writer and speaker while working in restaurants [....]

It helps to add in the context that anti-Israel sentiment is a much touchier subject in the UK than in the U.S. because many still feel anti-Semitism is a major problem, that it still raises its head in the whole class structure there. This is a problem Corbyn had, too.

Also, after Corbyn, the masses may have had enough of the whole far lefty thing.