The joint endorsement of the review into industrial disputes by the Conservative's Francis Maude and the Liberal Democrat's Vince Cable has suggested renewed coalition tensions on the main target of the inquiry.
Mr Maude said the review would chiefly examine: "Allegations about trade union industrial intimidation tactics, including attempts to sabotage businesses supply chains and harass employers' families."
Mr Cable, though, stressed the review would examine wrongdoing on both sides of industrial disputes.
He added: "There are rogue unions but there are also rogue employers, some of whom have in the past engaged in illegal tactics like blacklisting."
More top news
The work and pensions secretary is said to be thinking of throwing his hat in the ring for leadership of the Tory party.
Prior to the EU referendum Boris Johnson spoke to ITV News National Editor, Allegra Stratton, on what a post-Brexit UK would look like.
The woman, called Karen, was in tears as she spoke about the xenophobic attacks she has suffered since the EU referendum.