I'm not sure tbh, not seen any details yet. All I know is the government have written down 10m to get them in there, and the homes are permanent.
It might be that there is social housing in the building and that they will occupy those. A lot of modern luxury high rises have to include so much social housing because the housing crisis in britain and especially london sees entire families sleeping in cars and that. So they have really basic facilities in comparison to their rich neighbours, they have a seperate 'poor door' to go through and they never meet inside the building, it's segregated living hence the phrase social apartheid aka seperated on class grounds.
But either way this is the result of the left/a left wing Labour government pushing for the homes of the rich to be opened up. If they hadn't have pushed that idea relentlessly and made it an issue the tories would have rehoused the survivors outside of london and washed their hands of them.