The World: Tokyo - Collis to leave O&M Japan for return to Australia

Mark Collis, the executive creative director of Ogilvy & Mather Japan, is leaving the agency to return to his native Australia at the end of this year.

Collis has worked at Ogilvy & Mather for around 18 months, after joining the agency from Leo Burnett Sydney.

During his time at Ogilvy, Collis has been responsible for working on campaigns for brands including Audi. While at Leo Burnett, he was also responsible for devising the "Earth Hour" campaign for WWF, which won a Titanium Lion at Cannes in 2007.

Ogilvy has not yet decided on his replacement and is currently interviewing prospective candidates.