Complex sentence: Hanson was the Director-General of the British Council between 1992--8 where he led a major reform programme for management change throughout the British Council, which is a British organisation specialising in international cultural and educational opportunities.
Split into simpler sentences: Hanson was the Director-General of the British Council 1992--8 where he led a major reform programme for management change throughout the British Council. The British Council is a British organisation specialising in international cultural and educational opportunities.