The 2011 ceremony featured names such as Tim Westwood, The Noisettes, Ace of Base and Roll Deep announcing nominees via pre-recorded videos.
Rozonda Thomas from R&B group TLC recorded a message of support for the nominees.
Tony Cowell announced the nominees for the Best International Unsigned Act.
In 2012 Online Music Awards were in aid of UK-based charity War Child.
Jermaine Jackson was a guest introducer for the 2012 awards which otherwise featured unknown presenters.