Part I. Regulating Reproductive Technologies: Challenges Old and New: 1. Regulation of assisted reproduction: past, present and future; 2. Regulation of gametes: resolving embryo disputes between gamete progenitors; Part II. Regulating New Reproductive Technologies: 3. In vitro gestation: the road to artificial wombs (ectogenesis) and mechanical reproduction; 4. In vitro gestation II: ectogenesis – a regulatory minefield?; 5. Regulation of uterus transplantation: when assisted reproduction and transplant medicine collide; 6. Uterus transplantation and unisex gestation: 'O brave new world, that hath such people in it'; Conclusion.