It's been going on since forever. The first people the British enslaved were their own kind, they just managed to create a society where citizens enjoyed the authority, and naturally the fruits of pillaging half the world did trickle down back then.

If you think about PFI etc. and how those contracts were crafted, it's no different to what happened to the UK's oil. That didn't eventually go to the citizens like Norway. Every last bit of the UK is being extracted now.