QUEST

How do they build the steam-powered paddleboats that cruise the Mississippi River? And, how did they create the defence system called 'the waterwall'.

How do they make modern paving stones and how has the process changed over thousands of years? Plus, how do they create a traditionally tailored tuxedo suit.

How do they fabricate fire gloves for emergency services personnel? Plus, how do they create the enamel that is used in bake-wear around the world.

How do the islanders of the Outer Hebrides use pedal power to weave world-famous Harris tweed? And, in Iceland, how do they prepare fermented shark.

Elvis convinces Mike to buy a bargain VW Golf convertible. But its bright colour is divisive, it's rusty, filthy and has a busted convertible roof.

Mike has a tip from an unusual source. He's selling a classic Ford Escort XR3i that he's owned for decades, but there are issues with the roof.

Henry and Fuzz find a rare custom IRIS Sporting Trials Car. It's irresistible for the boys who get to work returning it to its former glory.

Find out how graphene, the world's smallest car, force testers, and composite cars are made.

Find out how LED tubes, chocolate peanut butter bars, and robotic medication dispensers are made.

Clock expert Steve tries to get an 18th-century wall clock ticking for the first time in five years. And, Brenton works on a beloved powder compact.

Drew and Tee scour the British coastline for treasure. On their 280-mile trek from North Wales to the Essex coast, they uncover a terrific triple sink and a bank of pine drawers.

Drew and Tee head to a salvage yard in Clacton-on-Sea and unearth a quirky enamel advertising sign. And, Drew nabs the deal of the century on a work of art in London.

In Western Australia, the Gold Devils receive desperately needed help. The McGhies family pulls together to exploit a new gold-rich ground.

Jacqui and Andrew encounter threatening wildlife whilst working at night. Plus, the Gold Devil go to desperate measures to find a new patch of gold.

In the final week of their trip, the race to reach $40,000 each is down to the wire for Rod and JC. They strike it big mining giant garnet clusters.

Opal fever has struck! In South Australia, rookie miners Daniel Becker and Justin Lang leave their lives behind, risking all to chase an opal fortune.

Clock expert Steve tries to get an 18th-century wall clock ticking for the first time in five years. And, Brenton works on a beloved powder compact.

The duo explore Shane's epic collection, where a stylish Lanchester LD10 catches their eye - a perfect fit for their love of post-war British cars.

Sam and Henry visit an incredible collection of Ford vehicles in Worcestershire. But the guys have their sights set on a 1960s Austin A40 Farina.

Sam and Henry are in Dorset to look around a collection of bikes, cars and tractors. The guys consider buying a pedestrian walk sign and a Yamaha FS1-SE.

Angus discovers Morris Minor cars and African carvings. Later, he finds Harrod's sheepskin coats from the 60s and mysterious stone objects.

Angus must pull out all the stops to sell two cherished collections, one of which was kick started by a horrific, near-fatal accident.

On the penultimate leg of Charles and Raj's antique hunt, their plan to spend the night in the great outdoors proves disastrous.

On the final leg of their trip in Wales, Raj and Charles buy a bronze deity and some rare wooden panels. Who can make the most money at auction.

Angus clears a home full of memories to help a widow start a new chapter. A couple needs Angus's help to raise some cash to pay for their wedding.

Wood restoration expert Will revives a once-beautiful mid-century coffee table. Plus, the toy team work on a wind-up panda with special family memories.

The crew restore a wheel from an old fishing boat. Leather expert Susie works on a vintage cricket ball, and a worn-out Portsmouth Football Club mascot gets some love.

How do they make the world's most expensive and luxurious beds? And, how do they deliver supplies and equipment to the International Space Station.

How do they make the distinctive Borsalino hat worn by Indiana Jones? And, how do they make a bicycle which can fold up to a tenth the size of a regular bike.