LONDON, July 18 (Reuters) - The spectre of rising corporate debt defaults exacerbating a global economic slowdown has for months been largely brushed aside by resilient credit markets. Now, long-feared corporate debt woes are starting to hit home, while more companies are being downgraded to a junk credit rating - facing higher borrowing costs as a result. Retailer Casino, with 6.4 billion euros ($7.19 billion) of net debt, is in court-backed talks with creditors; Britain's Thames Water is in the headlines with its 14 billion pound ($18.32 billion) debt pile. For FACTBOX: Corporate debt woes are on the rise, click here. Nonetheless, not all firms may be able to survive the challenges of vast debt, higher interest and business costs and declining profits.

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Persons: Julius Baer's, Markus Allenspach, Guy Miller, Miller, it's, Aymen Mahmoud, McDermott Will, Emery, Elena Lieskovska, Chiara Elisei, Dhara, Christina Fincher Organizations: SBB, P Global, U.S, Reuters, ICE, Zurich Insurance, ABN AMRO, European Central Bank, London Finance, Bain Capital, Thomson Locations: Swedish, Spain, Europe