Sperm donors are anonymised in British clinics. Recipients don’t even get to see a photo of the man who will father their child. Donor-conceived kids can only discover the identity of their biological father upon reaching adulthood themselves. But Mitch Kennedy is a private donor. His sperm has been used by 23 couples - and he’s met them all. In most cases, he’s slept in their spare room during the conception. He has around 40 children. In this fascinating interview with Olly, Mitch explains the logistics of his bespoke donation process, the legalities of his paternal responsibilities, and the ‘dark cloud’ that deters him from donating to hetrosexual couples... This episode first aired in October 2017 - now remastered and with an update from Mitch, we're replaying this with the news that sperm in the US is now one of their most priciest resources. Learn more about your ad choices. Visit megaphone.fm/adchoices