A consortium spearheaded by private equity firm BGH Capital is believed to be preparing a $6 billion bid for Australia's second biggest private hospital operator, Healthscope. Street Talk understands BGH has teamed up with Healthscope's biggest shareholder AustralianSuper, and other financial investors, in a bid to take the hospitals group private and run it away from the ASX-boards. The consortium is believed to already have about a 15 per cent stake in Healthscope, worth more than $500 million. The bulk of those shares belong to AustralianSuper. The company has had its bankers at UBS at close hand in recent days.