Ogogo, who appeared in Big Brother: Celebrity Hijack in 2008, was the surprise victor, beating the favourite in a tense bout that was watched by royals Prince Phillip and Prince Edward.
"It was my self-belief that got me over the line," said Ogogo afterwards.
"Neither my family nor my teammates believed I could win this. If I didn't believe in myself my legs would have crumbled."
Ogogo dedicated his victory to his mum, who suffered a brain haemorrhage six weeks ago.
After the fight, he wrote on Twitter: "Speaking to my Mum, hearing her tell me she loves me has been the best part of the day bar none... Inspiration. X"
Celebrity Hijack was a spinoff of the popular reality show, which aired on E4 and featured especially talented youngsters ranging from 18-21 years old. Ogogo finished fourth in the final. The series was won by aspiring politician John Loughton.
[Olympics London 2012 - In Pictures]
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