They do share a common religion though - I think that might be the source for what we call "Indian culture"? Like Islamic culture is a thing, even though Muslims are all over the world and vary widely. In much the same way, I think "Indian culture" (Hindu culture) is recognisable, even if people speak different languages and belong to different races.

Swnio’n union fel y DU — es i i Brifysgol Cymru yn Aberystwyth.

Not much of that (nor Scots Gaelic, nor Irish) in the Empire.

And if local culture like Morris dancing, Caber tossing, and cheese rolling made it off the island, I never heard about it; conversely, the things which rich people in the UK did enjoy (Cricket, Shakespeare, Christianity) they did export.