Power in the unions

Four of the UK's most radical trade unions are negotiating a pact to work more closely together on campaigning and solidarity work.
The the Civil and Public Serrvices union, Fire Birdges Union, National Union of Journalists, and Rail Maritime and Transport union see parliamentary lobbying as one of the areas where they can unify their efforts.
None of the four is affilaited to any political party.
The union's leaders - Mark Sewotka, Matt Wrack, Jeremy Dear, and Bob Crow - were among the group dubbed "the awkward squad" when they were first elected.
An announcment is expected in Manchester in September at the time of the Labour Party conference.
Is this the start of the realignment?