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Human Fertilisation and Embryology Bill [Lords]

I am grateful to the right hon. Gentleman, who is making a thoughtful speech. Does he not give any weight to the possible psychological harm to a second child—a saviour sibling—who had given, say, bone marrow on a number of occasions and came to discover, be told or believe that he had been created, selected or put together primarily for a particular purpose? Would such a child not wonder about what kind of child he would have been had that selection not taken place, and would that not add to the teenage angst and turbulence that we see in too many youngsters already?