Holed up alone in a suburban British house thousands of miles from home, cannabis farmer Cuong Nguyen spent months carefully nurturing his plants, one of thousands of Vietnamese migrants working in the UK’s multi-billion dollar weed industry. “All I ever wanted was to make money… whether it was legal or illegal,” Cuong, who is now back in Vietnam, tells AFP. It was criminal career steered by the Vietnamese gangsters behind the UK’s huge marijuana trade — which researchers value at around 2.6 billion pounds ($3.2 billion) a year.