Those who agree with Baroness Warnock argue that all donor offspring need to know who their biological parents are, for both social and medical reasons. But leaving aside the question of whether this right should be extended (and legally enforced) to cover everyone living in the UK, how true is this assertion?
Certainly, many people conceived through sperm donation feel they need to know more about their donor 'fathers', but there are many others who do not feel the same way. And there are many more who, rightly or wrongly, do not even know about the circumstances of their conception. Should the law also dictate when and how parents break this news to their children?
The argument that a knowledge of our genetic inheritance is important for medical reasons is perhaps more compelling - family history can provide healthcare practitioners with vital information. However, this may become less, not more, important in the future, as doctors are able to examine directly many of the genetic alterations associated with common diseases. But in the meantime, it should be possible for donors to provide more detailed medical information without necessarily losing their right to anonymity.
The UK government is currently reviewing the information given to donor offspring when they reach the age of eighteen. The issue of donor anonymity requires careful consideration, as it affects the rights of potential donors and social parents as much as those of the people conceived in this way.