Oli Pettigrew was born in Hong Kong, schooled in England and a resident of Singapore since 2004. He began modeling in Hong Kong in 1999, appearing in ads for several lifestyle brands - culminating in a year-long Levi's campaign and a role in the film Gen Y Cops. Pettigrew was selected as host of SONY STYLE on AXN, which landed him a nomination for Best Host at the Singapore Elle Awards in 2008. Following this, Pettigrew went on to host for Lonely Planet, Channel News Asia, Channel V, Star World, HBO, Cinemax, Food Network, TLC, Miss Earth and AXN. In 2011, Pettigrew hosted the fourth season of Sony Style (now Sony Lifestyle), and was nominated at the Asian Television Awards for Best Entertainment Host. Pettigrew hosted the awards with his wife Linda Black.
He began 2012 as a weekly feature on six shows ( Cash Cab Asia, Lonely Planet Six Degrees China, Sony Style (Sony Lifestyle), Epad on Max, HBO's Daily hosting and a series of internationally broadcast food Vignettes) on five networks ( AXN, HBO, CINEMAX, TLC and Food Network Asia). The shows gained 3 nominations at the Asian Television Awards 2012. For Cash Cab Asia, Pettigrew was nominated at the 2012 Singapore Elle Awards for Best Host. In late 2012, Pettigrew received 2 nominations at the Asian Television Awards for Best Entertainment Host for Sony Lifestyle Season 5 and Cash Cab Asia Season 1.
He won the award for Cash Cab Asia. In 2013, he hosted Miss Earth 2013 together with his wife Linda Black held in the Philippines.
2014 saw Pettigrew shift to the American market as well as winning the Asia Rainbow TV Award for Best Program Host at the Asia Rainbow TV Awards in Macau.
In September 2014 he joined the cast of Right This Minute for its fourth season