Complex sentence: From 1995-2011 he was the Director of the Centre for International Education (CIE), at the University of Sussex, which he developed as an internationally recognised centre for research on education and development in low income countries.
Split into simpler sentences: From 1995-2011 he was the Director of the Centre for International Education (CIE), at the University of Sussex. The Centre undertakes research on education and development in low income countries.