Iowa baby Nash Keen, born at just 21 weeks gestation and weighing only 10 ounces, has been recognized by Guinness World Records as the world's most premature baby to survive.

A mum and dad, whose daughter received life-saving care in Royal Bolton’s Neonatal Unit 21 years ago, are aiming to raise thousands of pounds for Our Bolton NHS Charity to help other families.

After 166 days of care, a 22-week-old baby has earned the title of "most premature baby ever to graduate from UMC's NICU," according to UMC staff.