After graduating from the
University of Glasgow, Campbell went on to work at
Queen Charlotte's Hospital in
London before being appointed Professor of Obstetrics and
Gynecology at
King's College Hospital. There, he established the
fetal medicine unit (now Harris-Birthright Research Centre for Fetal Medicine), where fetal medicine practitioners such as
Kypros Nicolaides and Charles Rodeck would later train and work alongside Campbell. Campbell's work included describing the use of ultrasound to diagnose fetal anomalies and later the use of
Doppler ultrasound, in particular uteroplacental Doppler, in the assessment of 'high-risk' pregnancies. Campbell became a Professor of Obstetrics & Gynaecology at
St George's Hospital Medical School before his retirement. He was the founding President of the
International Society of Ultrasound in Obstetrics & Gynecology (ISUOG) and the first editor of the journal
Ultrasound in Obstetrics & Gynecology (The White Journal), a peer-reviewed journal that focuses on
ultrasonography in
obstetric and
gynecological practice. In 1992, he was awarded the Ian Donald Gold Medal of ISUOG in recognition of his contributions to ultrasound in obstetrics and gynecology, having authored over 400 peer-reviewed publications. Since 2001, Campbell has served as a consultant at CREATE Fertility, a clinic that provides advanced techniques in
reproductive medicine,
antenatal care, and
gynecological screening. He also developed a method combining 2D and 3D ultrasound techniques, resulting in published papers on diagnosing cleft palate. In this work, he collaborated with Christoph Lees (Director of Fetal Medicine) and Per Hall (orofacial surgeon), two colleagues at
Addenbrookes Hospital. The technique, called the reverse face view, provides information on
congenital defects of the fetal palate; previously, only defects of the lips and alveolus could be visualized by existing techniques. He described patterns of fetal behavior, such as blinking, smiling, crying, and reflexes in early pregnancy. Many of his images and moving 3D sequences of fetal behavior have been used in television documentaries such as "My Fetus", "Life Before Birth," and "
In the Womb". Campbell has continued to work as supervisor of the ultrasound arm of the UK Collaborative Trial of Ovarian Cancer Screening (UKCTOCS) trial. == Positions held ==