Sunday 4 November / Channel 4 @ 5.45pm
Robert Llewellyn and Lisa Rogers are back after a summer break with the semi-final showdowns. After the mechanical mayhem of the early knockout rounds, only four teams remain in this year's competition, all of them dreaming of being crowned Scrapheap Challenge Champions. Large-scale construction projects are the inspiration for the first of this year's semi-finals.
Devon surfers The Beach Bums and Norfolk fire-fighters The Extinguishers will need every ounce of strength and enthusiasm as they take on one of the biggest builds in Scrapheap history. They have just ten hours to build giant earth-moving machines capable of shifting hundreds of kilos of soil and gravel. It's a mammoth task, but which team will claim victory?
Producer: Ian Thomas