John Parsons is a Trustee at the Progress Educational Trust (PET), Founder and former Director of King's College Hospital's Assisted Conception Unit, and former Director of the hospital's Termination Of Pregnancy Service. He is also a Fellow of the Royal College of Obstetricians and Gynaecologists, a former Trustee at the British Pregnancy Advisory Service and at Child (now subsumed into Infertility Network UK), and a former Clinical Inspector for the Human Fertilisation and Embryology Authority. He has assisted in the establishment of assisted conception units in Asia, the Middle East and Africa.
After studying medicine at the University of Dundee and House Officer appointments in the National Health Service, John worked for the Ministry of Overseas Development (now subsumed into the Department for International Development) as a General Medical Officer in Malawi. He then trained as an obstetrician and gynaecologist, and was a member of the team - directed by Professor Lord Robert Winston - which established the first successful pregnancy following in vitro fertilisation at Hammersmith Hospital. His research interests and publications have focused on the use of ultrasound in the investigation and management of infertility, and the simplification of assisted conception techniques.