were they, its funny that is not how i remember it. Many Asians came from Uganda, having been ousted by that noted nice man Idi Amin, the people who seemingly had British dual passports came and settled here.
There was a serious manpower shortage after the war, so the powers that be invited those from the colonies, notably the West Indies to come and work here, not laziness on the Brits part, more out of necessity.
I always love it when someone bashes the Brits, as lazy, didn't work, let immigrants do it all, wonder how industry ever got going long ago.