On 15 November 2010, the Court of Appeal was asked to adjudicate a high-profile custody battle over two children conceived by artificial insemination to a lesbian couple using donated sperm. Unusually, the sperm donor had parental responsibility for the children from the outset and applied for further access. In June 2010, a Court at first instance granted the father joint residency, which allowed him equal access to the children, involving 152 night stays. The couple applied for a primary residency order. The children’s mother argued that the original order “marginalised” her partner’s rights. The Court of Appeal has refused to overturn the joint residency order.