He modeled for around 10 years in London, Milan, Paris and New York City.
He is best known for his appearance as a judge and photographer on the reality television show ‘America’s Next Top Model’. His mother was a formal Miss Sri Lanka which influences him towards modeling as he grew up.
He was born with mix ethnicity of British, Irish, Portuguese, Sri Lankan and English nationality.
He planned on continuing his studies in medicine, but Barker's mother entered him into a televised model search on The Clothes Show.
Barker wound up being a finalist on the show, which started his modeling career.
Barker opened his own photo studio, Studio NB, in the now-fashionable Meat Packing District in Manhattan.