The union Unite says it has evidence that the vetting of individuals by name in the building industry is still happening, four years after the discovery of a secret list that denied people work for years…For almost two decades it was the UK construction industry's dark secret. Information was being collected about ordinary workers and fed into a blacklist…Things have changed since 2009. New laws have been introduced and companies say procedures have been changed…But some workers say the problem has not gone away...In 2012 Frank Morris was working as an electrician for a subcontractor on the £15bn London Crossrail link…Mr Morris says that within weeks of starting work he was identified as a union man and…had its contract withdrawn…Crossrail told Panorama it vigorously denied what it said were unsubstantiated allegations made by Frank Morris, and told us it had seen no evidence of blacklisting of any kind by contractors involved with the Crossrail project.