Ten years after selling its Australian arm in a management buy out Dun & Bradstreet Corp has bought the business back.AMP Capital, which invested alongside management in the 2001 MBO, sold the business to LCW Private Equity in 2007.Since D&B sold out in 2001 revenues have lifted from $29 million to $110 million. The business traded at a loss in 2001 and made a profit, before interest and tax of around $20 million, in the last year.LCW made a capital gain from the sale of D&B Australia of around $100 million. LCW put the purchase price at A$233 million. D&B put the price at US$205 million.D&B is the dominant provider of credit reporting on businesses in Australia and New Zealand. It also operates a consumer credit reporting arm that is chipping away at the dominance of Veda in that segment.