Labour's caucus will this morning consider a motion to expel outspoken MP Gaurav Sharma.
Sharma has made repeated public appearances accusing colleagues of lying, bullying and a cover-up - claims denied by Labour.
Matt McCarten - a former chief of staff for two Labour Party leaders - says it should never have reached this point and believes the party is paying for neglecting its back benchers.
He spoke to Corin Dann.
