Labour's shadow business secretary Chuka Umunna warned today that the party won't regain the public's trust if it is riven by infighting.
Mr Umunna dismissed reports of growing bitterness between leader Ed Miliband and shadow chancellor Ed Balls as "utter nonsense."
He said Labour couldn't afford a repeat of the Blair-Brown spat if it was to rebuild itself following its "catastrophic" defeat in the 2010 general election.
A government guided by common sense would respond to news that publicly owned Royal Mail has increased profits to £403 million by scrapping plans to flog off the service.