Senior directors at construction firms Balfour Beatty, Laing O’Rourke and Vinci were up in front of a committee of MPs last week.
It was part of the House of Commons Scottish Affairs Committee’s investigation into the construction industry blacklisting scandal.
Bosses again admitted culpability.
They confessed their companies used the Consulting Association’s blacklisting service up until it was raided and shut down by the Information Commissioner’s Office in 2009.
They were accompanied by legal advisor Richard Slaven, a partner at Pinsent Masons, and crisis management consultant Richard Jukes of Grayling.
Both Slaven and Jukes are retained by the Construction Workers’ Compensation Scheme, set up by the guilty contractors to buy off blacklisted workers.
The Labour Party policy forum also agreed last weekend to launch a full inquiry into blacklisting if it is elected next year.