12x1 - Wheelie Cars

In the first match of the UK tournament, members from Royal Air Force (The Squadron) and Royal Navy (Destroyers) built a wheelie car and race it along the legendary Santa Pod race track. In race day, both teams drove their vehicles in stright and curved tracks. Destroyers won. Team - members The Squadron Destroyers

12x2 - Bomb Disposal

A team of police officers (Cops and Bodgers) and a trio of techies (Men in White) built remotely-controlled machine that can cut through electrified fencing, tackle deadly toxic waste, and dispose of dangerous bombs set to explode at the slightest knock. Team - Members Cops and Bodgers Men in White In challenge day, each team won one of the fence-cutting and toxic waste dumping events. In the bomb disposal event, Cops and Bodgers was able to safely disarm the last bomb, but Men in White failed in all 3 attempts.

12x3 - Backpack Cars

A chunky team of student farmers (Muckspreaders) and a troop of Essex scout leaders (Ging Gang Goolies) built vehicles that can all four team members, and can be packed into 4 suitcases. To further complicate matters, they have to drive downhill, pack up the vehicle and carry the suitcase across treacherous terrain (including crawling through a tent tunnel), then reassemble the vehicle and racing to the finish line. Team - members Muckspreaders Ging Gang Goolies In race day, Muckspreaders led in first two part of the race. In the final part of the race, Muckspreaders team used foot to help accelerate the vehicle and was disqualified.

12x4 - Amphi Bikes

A trio of slick-backed 1950s-style rockers from Sheffield (Rockin' Rabble) and a team of barmy bus mechanics from Bucks (Double Deckers) built amphibious motorcycles. Team - Members Rockin' Rabble Double Deckers

12x5 - Ice Racers

A team of Surrey estate agents (Hot Property) and a trio of jet engine fanatics from Northamptonshire (Jet Pack) built the fastest ice racing vehicles from a pile of scrap.

12x6 - Giant Darts

An all-female team (Iron Maidens) and, a trio of medieval battle enthusiasts from Yorkshire (Jousters) built machines that shoot giant darts to a giant dart board. Iron Maidens built a spring loaded catapult-like thrower, Jousters built a crossbow made from wood. In challenge day, first attempt by both teams failed to launch darts fell short. In the second attempt, Jousters fired the dart to the board, but hit just below the centre; the dart launched by Iron Maidens failed to reach target. In the final attempt, Jousters overpulled the trigger and broke the bow. As a desperate measure, Iron Maidens tried to fire the dart by putting the spring directly behind the dart. The dart launched by Iron Maidens still fell before reaching target, even more so than previous attempt. Team - Members Iron Maidens Jousters

12x8 - Speedboats

A trio of Hampshire policemen (Cops and Bodgers) and three of Yorkshire's finest (Jousters) in a battle to bodge up the fastest boats in Junkyard history.

12x9 - Fire Engines

December 10, 2003

Slick-backed 1950s-style rockers from Sheffield (Rockin' Rabble) and a crew of slick estate agents from Surrey (Hot Property)built fully functioning fire engines. Each vehicle would be tested for a race to resuce a stranded doll on second floor of a wooden house, a race to douse the burning barbecue grill, then the race to douse the flame on the wooden house. Rockin' Rabble built on top of a pickup truck with a giant tank and a paddle pump. Hot Property built from a van with a smaller tank and pump. In challenge day, Hot Property won the rescue race, Rockin' Rabble led on barbecue grill event. In third race, Rockin' Rabble's vehicle's pump broke, so the teammates had to use water bucket. Hot Property eventually ran out of water, but not before dousing most of the flame. Hot Property won the third round and the match.

12x10 - Car Curlers

December 17, 2003

In the second semi-final, three policemen from Hampshire (Cops and Bodgers) and a team from the Royal Navy (Destroyers) built curling machines that can skim full size, wheel-less cars across an ice rink. The winning team would be the one that has its car closest to the centre. Destroyers built a chain driven, motorized pushing arm; Cops and Bodgers built a gravity-driven hammer. In challenge day, the machine from Destroyers was broken, but eventually fixed. Destroyers won.

12x11 - Tanks

December 30, 2003

In the final of the UK tournament, a team of naval engineers from Portsmouth (Destroyers) and a bunch of estate agents from Surrey (Hot Property) built tanks that can pass over the rough terrain and shoot predetermined targets. Destroyers built a 6-wheel drive tank, Hot Property built tread-driven tank. In challenge day, the tank from Destroyers was able to finish the course with a broken turret. Hot Property's tank, however, was high-centred when driving over a uphill slope. The tread failed to push the tank across the slope and the team failed to finish the race.

12x12 - Grand Prix

January 6, 2004

A team of engineers from Jaguar (The Catalysts) and season 12 champions (Destroyers) built Grand Prix racing cars capable of taking on Britain's fastest circuit. The Catalysts built a car with engine behind the driver, Destroyers built a car with engine in front of the driver. In challenge day, The Catalysts won the race and Grand Final.