What are the risks of unregulated sperm donation?
A sperm donor who claims to have fathered more than 180 children has been used by a judge to warn of the dangers of unregulated sperm donation.
Robert Charles Albon, who calls himself Joe Donor, claims to have fathered children all over the world from China to Australia after advertising online.
But using him as a donor turned into a "horror story" for a couple after he took them to court as he wanted parental rights over their child.
The BBC have approached Mr Albon for a response.
Video filmed and edited by Erin Lister
