Anna Bateson, the marketing director for YouTube EMEA, is leaving her role in the UK to take a new global marketing position at Google in the US. During her time at YouTube, Bateson helped change perceptions of the video sharing site among advertisers and consumers. She was part of the team that launched the acclaimed documentary "Life in a Day" and was responsible for YouTube's first advertising campaign in the UK. Google declined to comment on Bateson's new role or who will replace her.