According to the Guardian, Prentis said:
“Progress seems like a party within a party. Our affiliation is to the Labour party. We don’t expect an organisation to be allowed to grow within it.”
The Guardian also suggest that Unison would back a motion attempting to “outlaw” Progress should one be brought to Labour Party conference.
More from LabourList
Labour losing more votes to Greens and Lib Dems than Reform – YouGov
Revealed: 17 union chiefs urge PM to support backbench climate bill
AI: Unions warn artificial intelligence risks ‘surveillance and discrimination’