Under English law a child born disabled, for instance by Tay Sachs disease, as a result of negligent embryo selection by preimplantation genetic diagnosis (‘PGD’), can sue the relevant health professionals by means of a 1990 amendment to the Congenital Disabilities (Civil Liability) (‘CD’) Act 1976. By contrast, a second child conceived outside the in vitro fertilisation (‘IVF’) clinic, whose Tay Sachs is not detected in utero by means of prenatal diagnosis, can have no claim against the relevant health professionals due to the decision in McKay and Another v Essex Area Health Authority, which held that a child can have no claim for so-called “wrongful life”. This paper argues that this difference is anomalous and inequitable. It highlights the inadvertent way in which the legislative exception was crafted and shows that there are no relevant differences between the selection practices of PGD and PND that would in any event justify such different treatment. It critiques the English ...