The Indian rise is probably irreversible because it includes components of development which not even recession will negate. But the British slump is reversible somewhat.

I don't personally like an economy hollowed out to fintech and IPR, with a huge service industry of underclass workers especially in health. So, I suppose I'm harking after some industry and manufacturing. Anyway, the size of the British economy could grow, somewhat. I'd be amazed if the Indian economy shrank even relatively: China has more hollowing out to come from the property market crash.