Over three years working as Public Relations Manager for luxury boat-builder Riviera, Denby increased the company's profile among target media and increased overall media exposure value from $800,000 to more than $3 million. He developed documentation and submissions for the Queensland Premier's Export Award 2005 and 2006. Riviera won Queensland Exporter of the Year in 2005 and 2006. He conducted all media liaison in judging for the national Boat of the Year in 2007 and 2008. Riviera won Boat of the Year in 2007 and 2008.