Day 28:  Rebekah Brooks and Piers Morgan bantered about hacking into each other’s phones at the 35th birthday party of their fellow tabloid editor Andy Coulson, the Old Bailey was told yesterday.  Former lawyer Ambi Sitham told the phone hacking trial that she had gone to a steak restaurant in Balham, south London, for the party as the girlfriend of publicist Neil Reading, who knew all three editors.