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Human Fertilisation and Embryology Bill [Lords]

My hon. Friend makes a valuable point, and it is to do with the point about repair as against enhancement. If the Government clarified where they were drawing the line, perhaps I would feel much more confident that I was doing the right thing when I went through the Lobby tonight. As we all know, tonight's vote is a conscience vote. I do not have any expertise on the subject, but I feel a great deal of nervousness when I am given to understand that we are considering modifying human beings, whether at a preliminary stage, as my hon. Friend says, or subsequently. The Government should be very clear about the issue, and should set out in primary legislation what is entailed, and what they feel should be allowed. I should prefer that to what I suspect is happening in the Bill; I suspect that it would ensure that, as science evolves, we may be able to catch up with that evolution through secondary legislation.