"In an abandoned two-storey house surrounded by woodland, he was locked-up and told to look after the plants that grew on every available surface."

"It was a mundane vigil of switching lights on and off over the plants at set times and watering them every few hours. But it was also punctuated by violence. When a plant failed, Ba was starved and kicked by a Chinese boss.... Ba never received any payment for his work, and wasn't told he was earning to pay off his fare to the UK. He was a slave.... He finally escaped by smashing an upstairs window, and jumping to the ground.... 'I didn't even know I was in England.' The train line, predictably, led him to a train station - and to what was for him a very happy meeting with British Transport Police. 'It had been a long time since anyone had been nice to me,' he says. Ba has now settled into British life. He recently won a prize at college for his grades, and celebrated his first Christmas. He'd never unwrapped a present before. The translator who met Ba when he was taken into police custody says the transformation is remarkable.... Ba doesn't know whether he'll be allowed to stay in the UK. His last meeting at the Home Office to discuss his application for asylum didn't go well. The official tried to persuade him that if he returned to Vietnam he'd be helped by the authorities, which Ba finds impossible to believe. He is sure that if he is sent back, he will be trafficked again...."

From "How a boy from Vietnam became a slave on a UK cannabis farm" (BBC).