Billionaire retail entrepreneur Philip Green's bid for supermarket chain Safeway Plc received a boost on Wednesday after it emerged he is the only one out of the five bidders to escape a competition inquiry. Trade and Industry Secretary Patricia Hewitt, on the advice of the Office of Fair Trading, ordered the commission to look into bids by Britain's top three food retailers Tesco Plc, J Sainsbury and ASDA, owned by Wal-Mart Stores Inc, as well as Morrison Supermarkets Plc.