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William Dennes image

Mr William Dennes

Consultant Obstetrician




Special Interests

Complicated pregnancy, Antenatal ultrasound and screening (including the Harmony Test). Multiple pregnancy (Twins) and elective caesarean section.



NHS Base

Queen Charlotte's and Chelsea Hospital


The Portland Hospital


020 7034 1301


Mr Dennes is a Consultant Obstetrician and Sub-specialist in Maternal and Fetal Medicine. He is a Consultant at Queen Charlotte’s and Chelsea Hospital, London. He works both in the NHS and Privately, looking after mothers at both Queen Charlotte’s and The Portland Hospital.

Mr Dennes is experienced in the management of women in pregnancy, and has a special interest in multiple pregnancies and high-risk obstetric cases. He is accredited as a sub-specialist in fetal and maternal medicine, and is experienced in all aspects of antenatal ultrasound imaging (both conventional and 3D/4D). Mr Dennes is accredited with the Fetal Medicine Foundation and routinely carries out invasive prenatal diagnostic testing (amniocentesis and chorionic villous sampling).

Mr Dennes graduated in London and subsequently went on to specialised training in obstetrics and gynaecology in London and the North West Thames region. Initially training at the Hammersmith Hospital (under Prof Winston) he returned to Hammersmith and Queen Charlotte’s Hospitals for further postgraduate research, completing his PhD thesis on the molecular mechanisms involved in preterm labour, with Prof Phillip Bennett. Following completion of training in obstetrics and Gynaecology he underwent sub-speciality training in Maternal and Fetal Medicine, at the Centre for Fetal Care at Queen Charlotte’s and Chelsea Hospital (under Prof Nicholas Fisk), a nationally recognised fetal medicine centre. He completed sub-specialty training in maternal and fetal medicine in 2005. He was initially appointed as a Consultant Obstetrician at King’s College Hospital, and returned to Queen Charlotte’s Hospital in 2013, where he currently holds a post as a Consultant Obstetrician and Specialist in Fetal Medicine.

Mr Dennes has contributed to publications in the field of obstetrics and fetal medicine, and reviews papers for peer-reviewed journals. He has contributed chapters to: ‘Proceedings of the Royal College of Obstetricians and Gynaecologists’, ‘Fetal Medicine’, ‘The Unborn patient: the art and science of fetal therapy’, ‘Progress in Obstetrics and Gynaecology, and the ‘Royal College of Obstetricians and Gynaecologists Yearbook’. He is a member of the British Association of Perinatal Medicine, and the British Maternal Fetal Medicine Society.

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