The boss of the controversial data company Cambridge Analytica is under fire from MPs tonight. Alexander Nix is accused of making false statements when he gave evidence to parliament last month. Tonight we have new evidence, which appears to contradict Mr Nix's evidence to MPs about his company's use of the Facebook data. Andy Davies reports.

Robert J.S. "Bob" Ross is Research Professor of Sociology and the Mosakowski Institute for Public Enterprise in Clark University. The son of a teacher and a garment worker and the grandson of garment workers, Ross has cared deeply about workers and their conditions and has been learning and teaching about these matters since 1994. He is Vice-President of the Sweatfree Purchasing consortium, an organization of nineteen cities and states which are working to remove sweatshop labor from the supply chains of their public purchasing of uniforms. The author of Slaves to Fashion: Poverty and Abuse in the New Sweatshops, Ross has written extensively on the global apparel industry and labor conditions and workers’ rights in it. His writings on these and other issues have appeared in variety of professional and journalistic sources.