Dr Benjamin Viaris de Lesegno

Dr Benjamin Viaris De Lesegno is a Consultant in Women's Health and expert witness at The Hillingdon Hospitals NHS Foundation Trust, where he has been a consultant in the NHS since 2016, having previously held a consultant post within the French public healthcare system. His principal areas of clinical expertise are maternal and fetal medicine, high-risk obstetrics, maternal medicine and general obstetrics and gynaecology, with particular interests in complex pregnancies, fetal disorders and multidisciplinary obstetric care.

He has extensive consultant experience managing women with high-risk pregnancies and complex maternal and fetal conditions, alongside providing comprehensive general obstetric and gynaecological care. His clinical practice encompasses antenatal diagnosis, fetal medicine, maternal medical disorders in pregnancy, labour and delivery, obstetric complications, and advanced ultrasound assessment. He also has significant expertise in managing conditions including pre-eclampsia, fetal growth restriction, multiple pregnancies, gestational diabetes, obstetric haemorrhage, endometriosis, fibroids, menstrual disorders, ectopic pregnancy and a wide range of benign gynaecological conditions. His practice combines specialist fetal medicine with the delivery of safe, evidence-based care for women with both routine and highly complex obstetric needs.

Alongside his clinical practice, Dr Viaris De Lesegno has made significant contributions to research in fetal medicine and obstetrics, including multicentre clinical trials, peer-reviewed publications and national guideline development. His academic work, particularly in prenatal genetics and fetal medicine, further strengthens his expertise in the assessment and management of complex maternal and fetal conditions, providing solicitors with confidence in his authority within this highly specialised field.

Dr Benjamin Viaris De Lesegno has undertaken medico-legal work since 2024, providing independent expert opinion in both clinical negligence and personal injury claims. He was awarded the Cardiff University Bond Solon Expert Witness Certificate in 2024. He accepts instructions from claimant and defendant solicitors and prepares screening, breach of duty, causation, and condition & prognosis reports. His medico-legal practice is centred on obstetrics, maternal and fetal medicine, and gynaecology, with particular expertise in the assessment of high-risk pregnancies, fetal disorders, complex obstetric care and obstetric emergencies.

He is also instructed in cases involving labour and delivery, antenatal and intrapartum management, obstetric complications, and a broad range of benign gynaecological conditions, including endometriosis, fibroids and ectopic pregnancy. Drawing on extensive consultant experience across specialist tertiary centres, Dr Viaris De Lesegno provides clear, balanced and evidence-based opinions that assist solicitors in evaluating complex clinical issues and determining whether the standard of care met accepted medical practice.

Dr Viaris De Lesegno's clinical practice is centred on the care of women with complex and high-risk pregnancies, where he is involved in the assessment, investigation and management of maternal and fetal conditions throughout pregnancy. He has particular expertise in fetal growth restriction, multiple pregnancies, maternal medical disorders, hypertensive disorders of pregnancy, gestational diabetes, prenatal genetics and antenatal ultrasound, providing specialist care for women requiring multidisciplinary management. His work also includes the management of labour and delivery, including operative birth, emergency caesarean section, intrapartum monitoring, obstetric haemorrhage and other acute obstetric emergencies.

Alongside his obstetric practice, he manages a broad range of benign gynaecological conditions, investigating and treating women with endometriosis, fibroids, menstrual disorders, pelvic pain, ectopic pregnancy and gynaecological infections. His practice incorporates diagnostic imaging, ultrasound and uterine assessment to support accurate diagnosis and evidence-based treatment planning.

A particular area of specialist expertise is maternal and fetal medicine, combining advanced prenatal diagnosis with the management of complex pregnancies affected by fetal abnormalities, congenital infections and other high-risk conditions. This breadth of practice enables him to provide comprehensive, patient-centred care across both routine and highly specialised obstetric and gynaecological services.

Dr Viaris De Lesegno has made significant academic contributions to maternal and fetal medicine through extensive involvement in multicentre clinical research, peer-reviewed publications, national guideline development and book chapters. His postgraduate research into the genetic and epigenetic mechanisms of congenital diaphragmatic hernia, completed with high honours, further demonstrates his recognised expertise within this specialist field.