Tension at the top of Metro Group, the world's fourth-largest retailer, made the headlines this week, with the future of CEO Dr Eckhard Cordes in doubt. Across the Atlantic, Sara Lee was rocked by the departure of senior executive CJ Fraleigh. In the US, ConAgra Foods told takeover target Ralcorp Holdings it had days to being talks on its US$5.2bn bid, while in the UK, Marks and Spencer showcased its new-look food halls as part of a GBP600m revamp of its stores. Click on the headlines for more.