Conceiving saviour children : technological advances, ethical concern and legitimate regulatory oversight? -- The regulatory landscape relevant to assisted reproductive technology -- Regulating access to and the delivery of pre-implantation tissue-typing services -- Liberty and reproductive decision-making -- The harm principle as a means for justifying state intervention and regulation -- Creating saviour children : what is the harm? -- Creating saviour children : the wider ethical and moral arguments -- Regulating assisted reproductive technology services for the creation of saviour children : a way forward