Ms Paula Fagan:

It is very difficult to know because it is more obvious in same-sex couples but most fertility treatment or assisted human reproduction is accessed by opposite-sex couples and that is a much more hidden area. We do not know the figure for donor-conceived children who already exist who would be the product of an anonymous donation. Research in the UK would say that only 2% of heterosexual couples would tell their children that they are donor-conceived. We have to deal with the reality that these children are here. It is good that the Children and Family Relationships Act 2015 does provide for anonymous donations. Maybe that could be replicated, retrospectively.