"When I say, 'be here with me now,' I mean don't zone out or get too in-your-head-instead, follow my energy, my movements," says Hayden.

Process of rolling forming from both side of disk type parts has been studied with analysis of forces applied to rolling head and each contacting zone on billet.

If Britain followed Switzerland into the border-free zone, "half the Chinese tourists on the continent would head to London on the Eurostar, " says Mr Zhou.