While more and more women in the UK are using donated sperm to get pregnant, many of them are taking the help of unlicenced donors to avoid high-priced treatment at private clinics. Simon Watson is one such unlicenced donor who has fathered several hundred children already, reports the BBC. The 41-year-old man has been a sperm donor for 16 years now, donating once a week. "Usually one [baby] a week pops out. I reckon I've got about 800 so far, so within four years I'd like to crack 1,000," he has told the Victoria Derbyshire programme aired on the BBC. "I've got kids all the way from Spain to Taiwan, so many countries. I'd like to get the world record ever, make sure no-one's going to break it, get as many as possible." The regulator, the Human Fertilisation and Embryology Authority (HFEA), does not allow a man to father more than 10 children. Each cycle of artificial insemination at privately-run licenced clinics costs a woman between £500 and £1,000, while rules for it at the NIS are extremely strict. But Watson charges only £50 for his services. He uses Facebook to find his clients. He undergoes tests for STDs every three months and posts his hospital certificate online, according to a news agency.