When Ijeoma Uchegbu arrived back in the UK as a single mum of three young children she soon found herself living in a homeless shelter; now she is a pioneer in the field of nanoparticles in medicine.

Ijeoma Uchegbu has dedicated her career to studying pharmaceutical nanoscience, seeking out ways to carry medicines to parts of the body that are notoriously hard to reach. But as a schoolgirl in the UK her aspirations were to work in a shop and earn enough to go dancing at weekends. It was when her Nigerian father took her back to his home country, aged 13, that she discovered a passion for science and a burning ambition.

Ijeoma went to university at 16, married and started a family of her own but when her marriage failed, desperate to do a PhD she moved back to the UK. By now Ijeoma was a single mum-of-three. The family had one suitcase, no coats, and just £500 to start a new life. It was a battle to keep the family afloat, fed, and safe. But Ijeoma is a fighter; soon she had a job in a lab and a home and a few years later she found love again.

Ijeoma co-founded a pharmaceutical company with her new husband. They are currently developing eyedrops to treat blindness and a nasal spray to target pain which she hopes will go some way to addressing the opioid crisis. She was given a damehood earlier this year and is a champion of race equality, and it turns out she also has a talent for stand-up comedy.

Presenter: Jo Fidgen

Lives Less Ordinary is a podcast from the BBC World Service that brings you the most incredible true stories from around the world. Each episode a guest shares their most dramatic, moving, personal story. Listen for unbelievable twists, mysteries uncovered, and inspiring journeys - spanning the entire human experience. Step into someone else’s life and expect the unexpected.