"A secret police document has revealed how the Metropolitan Police's Special Branch helped the illegal blacklisting of trade unionists - preventing them from getting jobs because of their political views..."
UK: Secret document reveals police ‘blacklisting’ (BBC News, link):
“A secret police document has revealed how the Metropolitan Police’s Special Branch helped the illegal blacklisting of trade unionists – preventing them from getting jobs because of their political views.
In one case, detectives suggested one individual was a terrorist, despite the claim being wrong.
The illegal practice – exposed ten years ago – involved major construction firms accessing secret files on 3,000 workers and their union activities.”
Background: “Every Man a Capitalist”: The long history of monitoring ‘unsuitable’ workers in the UK (August 2013)