Dark world of internet sperm donors is exposed... including one man who says he does it so he can enjoy the 'perk' of unprotected sex

Men who are willing to donate their semen for as little as the price of the petrol needed to travel to the destination of their female recipient are the focus of a new BBC Three documentary. The film follows the world of donations arranged via social media, and follows couples like Jody (main image, left, and inset right) and Charlene (main image, right), who have contacted sperm donors (inset left, a donor speaks anonymously on camera) online to request their services.