Can anyone answer this question?

So one of my fav things to do during my college days was to take late night drives to my local 24 hr Tesco. I'm talking 12am-3am kinda time. Anyways, without fail the place would still be fairly active but it would be mostly Britsh Asians and their young children?

I never really thought too much about it until i started taking a girl I was seeing (pure romance lol) and after a few visits she pointed it out to me too.

Any Brit Asians know the reason if any? I mean the Tesco was close to a fairly huge Asian population but it was still odd to see all these 5 - 10 year olds with their parents doing their family shop at like 2am :/