Trade unions piled pressure on Scottish Finance Secretary John Swinney to act yesterday as he again ducked calls for a blacklisting inquiry.

Officials from the construction industry's Unite and Ucatt unions offered a cool response after the SNP minister punted the prospect of a public inquiry off into the horizon.

Union warnings over the practice were first vindicated in 2009 when a raid on blacklist firm the Consulting Association retrieved a database of 3,200 names.