Labour's shadow justice secretary Sadiq Khan has suggested that the coalition should bar G4S and Serco from bidding for future government contracts, including a tender to run the probation service.
He also called for both the police and Serious Fraud Office to investigate all of the contracts that both companies currently hold with government departments.
More top news
YouTube superstar Alfie Deyes got a sense of how far he has come when thousands of fans descended on his latest book signing in London.
The last blog from woman about her final days after she was diagnosed with cancer - and the things she valued in life - has gone viral.
Ed Miliband would rather discuss working families and the NHS, but the question of English 'home rule' looms large over Labour's conference.