Prime Minister David Cameron has ordered a wide-ranging inquiry into industrial disputes, including alleged intimidation tactics of trade unions.
The review, led by Bruce Carr QC, will examine, in particular, claims that "leverage" tactics have been employed by the unions in disputes.
The Government-ordered inquiry follows the bitter industrial dispute that almost led to the closure of the Grangemouth oil refinery in Scotland.
The Unite union dismissed the move as a "Tory election stunt" and said no worker body would "collaborate" with it.
More top news
Rogue landlords are making life unbearable for tens of thousands of tenants in England, according to Shelter.
David Cameron has announced plans for 18 more free schools and vowed to continue to open hundreds more in the next five years.
Great British Bake Off star Sue Perkins reveals she's been living with a brain tumour for eight years.