What’s that got to do with the thread title? You’re taking it off topic. The thread is about the Labour leaders idea of the UK going back to the old ways of training our own NHS professionals instead of relying on cheap imported labour.
Ah, I've got it now. He means back in the imaginary days that exist only in Brexers heads, when unicorns grazed on the village green and red-coated soldiers invaded and looted most of the world.
Ooops, sorry, that bit was true.