Parts made with forced labour in China may be being used in cars around the world, according to a new report by Human Rights Watch. It says it has found "credible evidence" that aluminium producers use workers from government-backed labour transfer programmes linked to the forced labour of Uighurs and other ethnic minorities. The report further details how the metal could then have entered the supply chains of global car companies. For more analysis, we speak to Jim Wormington, lead author of the report.