Nature is the theme of episode three’s challenges. The five remaining teams must complete an Unplanned Build where they must create as many miniature unique and identifiable insects, birds and wild animals as possible in surprise15 minute intervals using no more than 15 bricks per creature, and the Planned Build sees comedian Bill Bailey and professional LEGO artist, Sean Kenney judge the creations made by the pairs as they populate a section of a nature walk with a rich cornucopia of plants, flowers, and characterful animals. Only three pairs will make it through to the final round.