Olympic star Sir Mo Farah says he was trafficked to UK as a child, says real name is Hussein

He claimed to be Hussein Abdi Kahin and that the people who flew him over from Djibouti gave him the name Mohamed Farah.

He claims that when he was nine years old, a woman who he had never met had flown him over from an east African nation and forced him to care for another family's children.

"For years I just kept blocking it out," the Team GB athlete says.

When he was taken away from home to live with family in Djibouti, according to Sir Mo, he was between the ages of eight and nine. A woman he had never met before and was not related to then flew him to the UK.

She told him he was being taken to Europe to live with relatives there - something he says he was "excited" about. "I'd never been on a plane before," he says.

The woman instructed him to introduce himself as Mohamed. He claims she was carrying fake travel documents with his photo next to the name "Mohamed Farah."

"I'd often lock myself in the bathroom and cry," he says.

His family did not allow him to attend school for the first few years, but when he was about 12 years old, he enrolled in Year 7 at Feltham Community College.

Sir Mo was identified as a Somalian refugee by staff.

Sir Mo's PE teacher, Alan Watkinson, assisted him in applying for British citizenship as Mohamed Farah, which he received in July 2000.

Sir Mo is told in the documentary by barrister Alan Briddock that his nationality was technically "obtained by fraud or misrepresentation."

Legally, the government can remove a person's British nationality if their citizenship was obtained through fraud.

Sir Mo says he wants to tell his story in order to change people's perceptions of human trafficking and slavery.

"I had no idea there was so many people who are going through exactly the same thing that I did. It just shows how lucky I was," he says.

"What really saved me, what made me different, was that I could run."