The conference will take place from 11:30 to 15:30 at the Camden Centre, Bidborough Street, London WC1.

Speakers will include Instituteof Employment Rights director Carolyn Jones, RMT general secretary Bob Crow, T&G deputy general secretary Barry Camfield, CWU deputy general secretary Tony Kearns, PCS general secretary Mark Serwotka, UCU joint general secretary Paul Mackney, NUJ general secretary Jeremy Dear, NUM national secretary Steve Kemp, CYWU national officer Dave Proctor, FBU general secretary Matt Wrack, BFAWU general secretary Joe Marino, and trades councils national committee member Shirley Winter, and POA general secretary Brian Caton

"It should anger all of us that the trade union movement today has fewer freedoms than when the Trades Disputes Act was passed a century ago," RMT general secretary Bob Crow said today.

"Winning our shared goal of the Trade Union Freedom Bill depends upon us mobilising the broadest possible unity among trade unionsists.

"The depth and breadth of grass-roots organisation of workplace reps has always been a crucial barometer of the general health of the trade-union movement.

"Removing the shackles that make solidarity and effective trade unionism illegal is no luxury: if we are to halt and roll back the tide of privatisation, it is an absolute necessity, and rebuilding the grassroots of the movement is an essential part of that process," Bob Crow said.