Complex sentence: After graduating in 1997, Roberts went on to work as a junior doctor with the National Health Service in South Wales for 18 months, and from 1998 as an anatomy demonstrator in the Anatomy Department at the University of Bristol, becoming a lecturer there in 1999.
Split into simpler sentences: After graduating in 1997, Roberts worked in clinical medicine as a junior doctor with the National Health Service in South Wales for 18 months. In 1998 she left clinical medicine and worked as an anatomy demonstrator in the Anatomy Department at the University of Bristol, becoming a lecturer there in 1999.