Complex sentence: She was promoted to Reader in 2001 and Professor in 2006, before moving to Royal Holloway University of London in 2008 to become the Hildred Carlile Chair of English.
Split into simpler sentences: She was promoted to Reader in 2001 and Professor in 2006. Ledger moved to Royal Holloway University of London in 2008 to take up the Hildred Carlile Chair of English.