Of course not, and I'm sure that the vast majority of BLM proponents would condemn the people in that video attacking police officers. However, I think the difference between UK and US police isn't as big as you might think. A lot of the same biases occur, the difference is that in the UK it's far less likely to escalate into a lethal situation. I think the other difference is that the UK has less of a movement to actually keep the status quo and I think our police are institutionally more open to changing their practices.
But also a lot of the biases that occur in society at large can explain why black people are more likely to end up in confrontations with the police. 68% of white people own their own houses. This drops to just 20% for black people. 74% of Indian households are homeowners though, so it's not strictly something linked to immigration. This has been a problem for decades both in the UK and US. One of the main themes of Spike Lee's Do the Right Thing was about how in this black neighbourhood, all of the businesses were owned by other ethnicities. Since property is one of the main ways out of poverty as well as one of the main ways to get people to feel like they have a stake in society, the fact that so few black people still own homes 70 years after the windrush generation came over is clearly a big problem. I'm not sure the reasons for it, but I'm sure there's a long list.