This is a free event that I thought I'd share with you:
www.lse.ac.uk/law/events/women-reproductive-rights-the-law/women-reproductive
One of the speakers is "...a leading practitioner in the field of surrogacy and assisted reproduction cases in which issues of legal parentage arise..."
Also, as an aside, this is a pertinent commentary on the recent consultation on surrogacy law:
www.bionews.org.uk/page_145855