Complex sentence: Dawes retired in 1985 and took up the post of director of Sunley Research Centre at Charing Cross Hospital, where he worked on both the computerisation of fetal heart rates and on molecular biology.
Split into simpler sentences: Dawes retired in 1985 and took up the post of director of Sunley Research Centre at Charing Cross Hospital. Here he worked on both the computerisation of fetal heart rates and on molecular biology.