In pictures: The Tate Britain Christmas tree 2007

This is the 20th year that Tate has commissioned an artist to decorate its Christmas tree Photograph: Sarah Lee/Freelance

Previous artists to take on the project include Sarah Lucas (2006), Richard Wentworth (2004), Tracey Emin (2002), Yinka Shonibare (2001) and Cornelia Parker (1995). 2003's artist, Mark Wallinger, is shortlisted for the 2007 Turner prize, which will be awarded in a few days' time Photograph: Sarah Lee/Freelance

Entitled Peace on Earth, Fiona Banner's contribution features no fewer than 123 different models of warplane currently in service around the globe Photograph: Sarah Lee/Freelance

Intriguingly, many models - Hawk, Eagle, Falcon - are named after birds, adding to Banner's suggestion that they are perched in the tree ready for take-off Photograph: Sarah Lee/Freelance

For Banner, however, the project turned into something of a headache. "It was a major research job to establish exactly what planes are in military service worldwide," she told reporters. "It took a long time to collect the models from all over the world. Some models didn’t exist and I had to construct them from scratch." Photograph: Sarah Lee/Freelance

But the work hasn't gone to waste - in addition to decorating Tate's tree, Banner has published a book on the subject under her own imprint. It is entitled All the World's Fighter Planes Photograph: Sarah Lee/Freelance