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.

BBC Panorama reporter Richard Bilton has the first TV interview with the woman who helped run that blacklisting operation.

Howard Nolan did not know he was on the list. As an electrician he spent years working on Britain's biggest building projects, but then the jobs dried up and all he had were his suspicions.