
Bradley-Jones has worked at the BBC since 2006. He will relocate to London from New York, where he has served as executive vice-president of digital media and business development of BBC Worldwide.
Niblock’s next move has not been disclosed. She joined the BBC from a background in commercial media. Previous roles include stints at UK satellite operator BSkyB and Nickelodeon International.
As the BBC’s international commercial arm, BBC.com currently has around 400 advertisers.