Baroness Tessa Blackstone is to succeed Liz Potter as chair of Orbit housing group when her six-year term comes to an end in January 2013. Baroness Blackstone, who was Vice Chancellor of the University of Greenwich from 2004 to 2011,previously served as Master of Birkbeck College, University of London, from 1987 to 1997 before being appointed as Minister for Education (1997-2001) and then Minister for the Arts (2001-2003). Among her senior governance roles, Baroness Blackstone is Chair of Grea...