This paper offers an assessment of the prospects for Christian engagement with public bioethical debates in a contemporary British context. One recent example, the debate provoked by proposed legislation for research involving human admixed embryos, is examined briefly. It is argued that this debate has some problematic features that are characteristic of public ethical debates in this context. Next, a proposal is offered as to how such bioethical questions may be approached from within a Christian theological tradition (specifically, a Reformed (...) Protestant tradition). This proposed approach makes use of four “diagnostic questions” to assess whether technological proposals and practices such as the creation of human admixed embryos can be consistent with the distinctive Christian narrative of creation, sin, salvation through Christ, and promised future hope. The final section offers some reflections on how Christians and churches might engage, on the basis of this theological approach, with public ethical debates such as the one about admixed embryos. (shrink)