Video: Interactive Business Bullet: Moody's, BAE Systems, Ladbrokes and Graff Diamonds Robert Miller with the main City and business news as Moody's threatens banks and insurers with credit rating downgrades, including Barclays, HSBC and Goldman Sachs; BAE Systems warns that on-going defence spending cuts by Britain and the United States will lead to flat sales in 2012; bookmaker Ladbrokes beats market expectations and raisesdthe full year dividend by 2.6pc and Graff Diamonds is said to be considering a $1bn IPO in Hong Kong this year.