 As of 2013 the clinic was seeing around 300 women a year and performing two defibulation operations a week, which involves opening a vagina sewn shut as a result of FGM Type III.Momoh worked as a temporary adviser to the World Health Organization in 1999 and represented the UK at the United Nations Commission on the Status of Women in 2001.From around 2007 she worked as a public-health specialist at Guy's and St Thomas' NHS Foundation Trust, before retiring in 2017.