Left-wing Labour MP John McDonnell has vowed to launch a "broad-based campaign" to defend his party's links with the UK trade unioon movement.
McDonnell's pledge follows a call from shadow chancellor Alan Johnson to bring in "one member one vote" elections in the Labour Party - which would deny a say to members of affiliated trades unions.
There is a detailed report in this morning's Morning Star newspaper.
McDonnell is the MP for Hayes and Harlington in west London and chair of the Labour Representation Committee.
The Morning Star quotes a spokeswoman for the Communications Workers Union (CWU) saying: "Trade unions created the Labour Party and it's important to maintain that link."