Her academic career began at the former Enfield College (now
Middlesex University) before she went on to become a lecturer at the LSE and Professor of Educational Administration at the University of London
Institute of Education. Blackstone was Deputy Education Officer of the
Inner London Education Authority (1983–1986). She has also worked as a policy adviser in the
Cabinet Office. As a member of
Jim Callaghan's
Downing Street thinktank, she upset the Foreign Office by criticizing diplomats' lavish lifestyles. She headed
Birkbeck College,
University of London, for a decade as
Master (from 1987 to 1997) until her appointment to the new
Labour government in 1997. She has also concurrently held research fellowships at the Centre for Studies in Public Policy and the
Policy Studies Institute. Blackstone became
Vice-Chancellor of the
University of Greenwich, holding this position up to 2011. She has served as chairman of the ballet board of the
Royal Opera House, the
Fabian Society, and the
Institute for Public Policy Research (IPPR), and has sat on the governing bodies of numerous other organisations. She has been on the Board of Trustees of
The Architecture Foundation. She is currently Chairman of the British Library and Chairman of Great Ormond Street hospital. She is currently the patron of Hamlin Fistula UK, a charity whose aim is to raise funds and awareness to support the Addis Ababa Fistula Hospital. ==Politics==