Never Too Small has an episode on a renovated flat in the Barbican: https://m.youtube.com/watch?v=2L0uML715dE
I personally love the brutalist and gigantic architecture of this time. Jam pack the flats, leave space for nature and public areas around it. Fairly standard in developed Asia, rare outside of ghettos in the West. Every time I discuss it with others, it's a hard sell against the "bbq with your neighbors in your back garden" so many aspire to by moving in suburbian houses.