Dave Prentis, general secretary of Unison
Media playback is unsupported on your device
Video

Unison leader challenges Labour to support strikes over pensions

The leader of the UK's biggest public sector union has said its members will never forgive Labour if it fails to back them in their fight over pensions.

Dave Prentis, general secretary of Unison, told Labour's conference that workers expected leader Ed Miliband to support them if they decide to strike.

But Mr Miliband has so far chosen to not to back industrial action.

Go to next video: Strike ballot 'unprecedented in scale'