QUEST HD

Steve brings in a vintage ticket machine which requires mechanical expertise. Meanwhile, an organ and toy mechanic works on an intriguing musical box.

A pair of sisters bring in a family bike that travelled around the world with them. Plus, a woman brings in a leather case that belonged to her great aunt for restoration.

A couple from Southampton bring in an antique toy from the Victorian era for restoration. Plus, ceramics expert Kirsten takes on a life size Bollywood mannequin.

A mother and daughter bring in a stuffed tortoise that has been in the family for 44 years. Plus, a woman brings in a chair that belonged to her mother.

Around the world, there are extraordinary building mistakes. Design teams and experts analyse what went wrong and how engineers are fixing them.

More everyday items are put under the microscope as we discover how air boats, onions, 3D metal printing and curved cabinet doors are made.

More everyday items are put under the microscope as we discover how retractable ballpoint pens, solar salt and tubas are made.

Simon and Max rummage through some old barns in Worcestershire. Max wants to put wheels on two air tanks, while Simon sees potential in some wooden crates.

Trying out some larger vehicles, the team test a plug in Hybrid VW T7 Transporter and match it up against a 7-seat PHEV SUV costing the same amount of money - the Hyundai Santa Fe.

JDV and Sid tackle some challenging terrain in a Land Rover P400E Defender. Vicki tries out the new MG EV4 and in Italy, Grace drives Ferrari's first V6, the 296 GTS hybrid.

Mike Wolfe and Frank Fritz travel all over America in search of the most interesting, rare and profit-bringing treasures, from old bangers to classic toys.

The Gold Gypsies' tenacity is rewarded with their biggest nugget of the season. Meanwhile, Jake's new plan to save the Dirt Dogs' season turns into a disaster.

Scrappers boss Alex Stead gambles his remaining cash on bigger machinery, pushing his marriage to the edge. And, the Victoria Diggers unearth a rare artefact.

The Boulder Boys drain floodwater in search of opals. Rod Manning is under pressure after using his wife's favourite opal ring as collateral.

The Blacklighters must relocate Opalzilla after their claim runs dry of opal. The Cheals hope to hit the jackpot in a bizarre structure, the Z-fault.

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.

Henry and Fuzz sail over to the Isle of Wight. They meet Vince, a fanatical collector whose sheds are bursting with British and Japanese bikes.

Henry and Fuzz are overwhelmed by Nick from Brackley's military collection. They leave with a vintage rarity, but will they find a buyer for something so unique.

The boys gallop to Newmarket, where they spot a cloche and a 'smoker's companion' table. In a barn, they find a pair of stylish '70s plastic chairs.

Simon and Max rummage through some old barns in Worcestershire. Max wants to put wheels on two air tanks, while Simon sees potential in some wooden crates.

Scott would love to own a VW Campervan to take his son on trips around their native Scotland. With Camper prices soaring, Mike and Elvis must be creative.

A mother and daughter bring in a stuffed tortoise that has been in the family for 44 years. Plus, a woman brings in a chair that belonged to her mother.

In Yorkshire, Henry and Fuzz uncover a 1951 Lea Francis Saloon: hand-built, elegant, and born in a time when motoring was a luxury.

Henry and Fuzz visit David's Derbyshire shed, a treasure trove of vintage mechanical gems, and uncover a wonderful Monet-Goyon motorbike.

Henry and Fuzz visit Richard's Staffordshire shed, uncovering an Excelsior and Mobylette as they dive into a treasure trove of two-wheeled gems.

Henry and Fuzz are overwhelmed by Nick from Brackley's military collection. They leave with a vintage rarity, but will they find a buyer for something so unique.

Henry and Fuzz rummage through David's hoard of Italian bikes in Norfolk. They're smitten by his Ducatis and his rare Mot Guzzis, but just what will he sell.

How do they extract iron ore from one of the most remote mines on the planet? And how do they make chandeliers that are fit for a queen.

How do they forge the blades to crack open oyster shells? Plus, how do scientists in a lab grow the synthetic diamonds of the future.

How do they make cheddar, the world's most popular cheese? How do they breathe life into Rususci Anne - the plastic woman that teaches CPR.

How do Ford produce the ubiquitous white van, the Transit? Plus, how do they ensure the Driza-bone coat lives up to its name.

Mike finds a rare rust-free model of Japan's answer to Britain's MGB GT. Edd must swap the sluggish auto for manual transmission to try and turn a profit.

Mike sources a VW 181 Thing from a collector, but is forced to dig deep for the purchase, meaning there isn't much left in the kitty for Edd to refurbish it.

The boys gallop to Newmarket, where they spot a cloche and a 'smoker's companion' table. In a barn, they find a pair of stylish '70s plastic chairs.

Follow the amazing manufacturing processes behind kelp caviar, luxury sailboats, dental crowns and high-performance engines.

Follow the amazing manufacturing processes behind leather briefcases, crop dusters, corn whiskey and drag racing clutches.

In Herefordshire, Simon finds an old workbench that he plans to turn into a chic dining table. Max thinks he can make a big profit on some motor oil bottles.

Three professional drivers who need their vehicles for work try out 3 budget EV cars - will they be tempted? And the team drive a classic Audi Quattro and BMW 3 series hybrid.

The team has the rare chance to drive a Formula E car with the Veloce team in Southern France. Plus, they drive the Audi 8 hybrid and sample three EV commuter bikes.

Mike Wolfe and Frank Fritz travel all over America in search of the most interesting, rare and profit-bringing treasures, from old bangers to classic toys.

The Dirt Dogs' huge dry blower shuts down due to extreme temperatures, while the Mahoneys and Gold Gypsies take a last-minute gamble that delivers big gold.

Neville and Mick's final hunt of the season is set to deliver another monster nugget. And, Scrappers boss, Alex, pays the ultimate price for gambling his life savings.

The Bushmen's new claim turns dangerous, forcing Rod and Les to choose between riches and safety. Plus, the Young Guns demolish their old mine.

Chris Cheal's dream of two mining teams struggles to launch. Meanwhile, the Blacklighters gamble on a new claim to break a month-long opal drought.

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.

Henry and Fuzz rummage through David's hoard of Italian bikes in Norfolk. They're smitten by his Ducatis and his rare Mot Guzzis, but just what will he sell.

Henry and Fuzz head to Lincolnshire to see Kevin's collection of vintage lorries and trucks. They find a Cornish fire engine, but is it too hot to handle.

Simon and Henry are in Bury St Edmunds to rummage through a shed full of collectables. They unearth a bamboo wood sofa perfect for restoration, and a unique safe.

In Herefordshire, Simon finds an old workbench that he plans to turn into a chic dining table. Max thinks he can make a big profit on some motor oil bottles.

Mike and Elvis try to buy carpenter Simon his dream BMW Z4. Simon only has £1,500 saved up and his daily motor is one of the worst they've ever seen.

Paper conservator Louise freshens up a treasured pastel portrait from 1993. Meanwhile, Steve is challenged with fixing up a very precious tin plate rocket.

Henry and Fuzz visit David's Derbyshire shed, a treasure trove of vintage mechanical gems, and uncover a wonderful Monet-Goyon motorbike.

Henry and Fuzz visit Richard's Staffordshire shed, uncovering an Excelsior and Mobylette as they dive into a treasure trove of two-wheeled gems.

James, Sim and Tony reinvent cinema seating, attempt to stop cereal going soggy and repair a telescope. They also have an idea for beauty treatments.

Cobbler Dean takes on a pair of running spikes used in the infamous 1936 Berlin Olympics. Paper conservator Louise revives a damaged photo of an ANC activist.

How do they make wood-burning stoves that bring warmth to the Norwegian winter? Plus, how did they build the synthesiser that changed music forever.

How do they assemble the reinvented Morgan 3 Wheeler? Plus, how do they protect firefighters' hands from heat, flame and chemical attack.