Labour Party rebels accused of 'undermining' the party

Shadow work and pensions secretary Stephen Timms has accused some Labour MPs of undermining the party.

On Monday night, 48 Labour MPs voted against the government's plans to cut the welfare budget, despite being told not to do so by the party's acting leader, Harriet Harman.

One of them, the leadership contender Jeremy Corbyn, said it was Labour's job to stand up for the poorest in society.

Ben Wright reports.