I expect that to Tower Hamlets planning watchers, this may not come as a surprise, as it may well be laid down in planning guidance, but it does seem to have gone to a Public Inquiry, so perhaps not.
I have seen many traditional pubs been saved by being classed as a community asset. It doesn't last mostly.
Developers often up the rent to make it unfeasible..no one takes it on for years and as a derelict building the council relent and finally allow for 'luxury' flats.
Repeated many times.
Here's an interesting case--a plucky gay fetish club against a (smallish) tower block proposal:
https://www.theguardian.com/world/2019/aug/16/london-council-saves-gay-fetish-club-from-redevelopment
I expect that to Tower Hamlets planning watchers, this may not come as a surprise, as it may well be laid down in planning guidance, but it does seem to have gone to a Public Inquiry, so perhaps not.