[3] Professor Regan is the first woman to hold a chair on obstetrics and gynaecology in the country and for the past decade she has worked to establish the biggest miscarriage clinic in the world.
[1] After receiving her MD Regan moved from Cambridge to London to become a consultant and senior lecturer in obstetrics and gynaecology at St Mary’s Hospital, where she is now chair.
[12] Regan was appointed Dame Commander of the Order of the British Empire (DBE) in the 2020 New Year Honours for services to women's healthcare.
[14] Her collaborative approach to women's health has resulted in her receiving Honorary Fellowships of seven UK specialties and several international Colleges of Obstetrics & Gynaecology.
[15] Regan lives in London, and is the mother of twin girls born in 1992 from her marriage to Professor John Summerfield, a liver specialist at St Mary's, in 1990, and so became a step-mother to two step-sons and two step-daughters[16][1]