Rooftop Rainforest

Wildlife expert Dusty Gedge's attempts to build an indoor rainforest on top of west London's Westfield shopping centre, facing obstacles as he tries to create an artificial environment that will support a variety of tropical trees, plants, animals and insects.

The project comes to an end, as wildlife expert Dusty Gedge races to complete his artificial rainforest habitat in time for the World Wide Fund for Nature's Earth Hour.