So World Rugby arranged a two-day workshop in London in early 2020, at which experts argued for and against including transwomen in women’s rugby. They considered science (sex differences in performance), medicine (how to lower testosterone, and the impact of doing so), law and risk (human-rights arguments for trans inclusion, and the consequences for injury and liability), and ethical and social issues (the losses to transwomen from exclusion and female players from trans inclusion).

