Complex sentence: He was previously Permanent Secretary at the Department for Education and at its predecessor departments from 3 January 2006 until 2012, and before that he was Chief Inspector of Schools at the Office for Standards in Education from 2002.
Split into simpler sentences: He was previously Permanent Secretary at the Department for Education and its predecessor departments from 3 January 2006 until 2012. Before that he was Chief Inspector of Schools at the Office for Standards in Education from 2002.