QUEST HD

How do they quadruple the power of the world's biggest engines with the most powerful turbochargers? How do they build new roads from old waste plastic.

How do they harness the wind to power a racing yacht to Olympic gold? How do they make a sword fit for an officer at the world's largest sword factory.

How do they make the amplifier used by rock legends, the famous Marshall amp? Plus, how do they turn wet clay into frost-proof garden pots.

How do they clean the world's tallest twin towers? How do they make a jigsaw where every piece is unique? How do they craft Olympic level hockey sticks.

Mike and Edd have a powerful and luxurious 1983 Mercedes 500 SEC to restore. Can the boys return this car to its former glory and still eke out a profit.

Mike seeks out a Porsche 912E. With the help of Edd, they address the years of neglect, while they bring home the horses and return on their investment.

Henry and Simon head east to Norwich where they visit a farm with an extensive collection of tractors. They find a bicycle with an unexpected and rare addition.

Ever wondered how everyday items such as garbage trucks and ceramic composite brake discs are made? Find out how these familiar objects are formed.

Ever wondered how everyday items such as class and championship rings are made? Find out how these familiar objects are formed.

In Tiverton, Henry Cole uncovers some tarnished scales and an original Lambretta scooter. Simon O'Brien wants to revive a bland table and a petrol gauge.

Dave and GT follow an exciting lead about some rare Italian cars hidden away on a local farm. Plus, GT falls in love with a worn-out Japanese car.

Dave and GT resurrect a farmer's 1977 Toyota Land Cruiser. Then it's love at first sight when they find a 1975 VWL-Bug 1600 that's had just one owner.

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 Dust Devils face a nightmare journey to their remote mining lease. The Ferals are set a huge gold target, and the Poseidon Crew find a nugget.

A machinery problem adds more woes to the Dust Devils' nightmare start. Shane and Russell find gold, while the Poseidon Crew hunt for an intruder.

The Blacklighters are forced to move their 10-ton processing plant to a new claim. Plus, the Cheals try to use abandoned truck parts to fix their agitator machine.

As the Bushmen search for a partner, their new rookie ignores safety protocols and rushes into a deadly no-go zone. Plus, the Cheals attempt to revive their season.

Henry and Fuzz visit Warwickshire to revive a battered Ford Transit. Once a workhorse of Britain, now a rusted relic longing for a second life.

Henry and Fuzz meet collector extraordinaire, Alan in Norfolk. They search through rare Harleys, British bikes, hot rods and piles of automotive junk.

Henry and Fuzz check out Nir's collection of vehicles, including American air taxis, 1920s Citroen saloons and 1980s Japanese Superbikes.

Henry and Simon head to the Norfolk Broads to rake through a couple's hoard of junk. They find an American pick-up truck and an old bird cage.

In Tiverton, Henry Cole uncovers some tarnished scales and an original Lambretta scooter. Simon O'Brien wants to revive a bland table and a petrol gauge.

Mike finds a 914 in a barn, but under the muck he can see a profit in the 70's sports car, so he buys it for a bargain price. Can Edd restore it to a saleable condition.

A pair of furniture restorers work together to revive a well-loved armchair. Meanwhile, silversmith Brenton West attempts to restore a handcrafted box.

Henry and Sam are in Devon to visit a father and daughter who own a shed full of vintage Americana. They immediately take interest in a dusty Chicago police car.

Henry and Sam look around an incredible Americana collection in Cornwall. After examining an array of classic motors, Sam springs a big surprise on Henry.

Irita sells a deep-sea diving helmet, rare books and designer candlesticks in the hope of funding a retired couple's new life in Greece.

..Gong. Irita makes a holy find that could be heaven-sent for a widower. Plus, a clock collection that's second to none needs to go to auction.

How do they fit all the features of a luxury apartment into a motorhome? And, how do they make a ballet shoe that can take the weight of a dancer on tiptoes.

How do they grow nearly 200,000 tonnes of mushrooms a year in the mushroom capital of the world? And, how do they make billions of life-saving gloves.

How do they mine a million tonnes of fertiliser from below the sea? How do they hand print millions of colourful clothes using the art of batik.

How do they turn thousands of tonnes of basmati rice into millions of microwaveable meals? How do they craft beautiful mechanical singing birds.

Mike and Edd are back in their West Coast workshop in the US and fixing up a 1973 Chevrolet Camaro. Can the guys still make a profit after restoring it.

Mike hunts the first ever Bond car, a 1963 Sunbeam Alpine. He finds a rust-free race-ready motor and Edd must deal with some surprises in the engine bay.

Henry and Simon head to the Norfolk Broads to rake through a couple's hoard of junk. They find an American pick-up truck and an old bird cage.

Ever wondered how everyday items such as cocoa beans and bulk chocolate are made? Find out how these familiar objects are formed.

Ever wondered how everyday items such as apple pies and household radiators are made? Find out how these familiar objects are formed.

Simon restores a 1950s radio and turns some antlers into a funky bar stool. Henry works on a curious piece of furniture and a broken Ducati motorcycle.

The guys unearth a rare 1958 Land Rover Series 1 in a shed full of junk. Then, they transform a 1972 Mazda Bongo van into a micro-home for millennials.

Dave and GT spy a super-rare VW 'split-screen' Kombi Van that could be worth big money. Then, an outback barn leads to a classic Mercedes convertible.

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.

Machinery breakdowns cause tensions to rise in the Poseidon Crew. The Ferals are moved onto a new lease, and the Gold Timers get stranded.

An old treasure map leads the Poseidon Crew to a big nugget. Marcus and Linden call in some expert help, while Shane and Russell take a financial gamble.

The Bishop hires a bomb expert to blast the impenetrable rock that's blocking access to a rich opal seam. Meanwhile, the Misfits face avalanches and dust storms.

The Mooka Boys risk being buried alive as they hunt for a legendary mine shaft. The Blacklighters are overwhelmed by choking dust on their bone-dry claim.

Henry Cole and motorcycle guru Sam Lovegrove travel from Cornwall to Oxfordshire to rummage in some of Britain's most amazing sheds and make some cash.

Henry and Sam are in Buckinghamshire seeking hidden automotive gems to sell. They find stationary engines, traction engines and vintage petrol cans.

Henry and Fuzz meet Norman, a lifetime petrolhead. His shed is filled with vintage cars, film props, bikes, and classic Mercedes saloons.

Henry and Fuzz visit Stephen, a diehard biker with a shed full of rare Czech and Japanese bikes, vintage cans, and motoring curios.

The boys head to Birmingham, where they look through a demolition expert's trove of salvage. Simon finds a dilapidated chaise longue and then the boys argue about an old bench.

Simon restores a 1950s radio and turns some antlers into a funky bar stool. Henry works on a curious piece of furniture and a broken Ducati motorcycle.

Mike wants a G Wagen - the popular German four-by-four. He finds one and Edd gives it a facelift, with a 2012 front end and rear lights. Will they land a big profit.

Cobbler Dean attempts to revive a well-loved pair of tap shoes. Next, silversmith Brenton is tasked with fixing a beautiful but battered silver purse.

Henry and Fuzz return to Surrey to visit collectors Nick and Hollie, who have an incredible array of cars including a 1921 Rolls Royce Silver Ghost.

In Chelmsford, Henry and Fuzz visit Fiat specialist Tristan, who has 500s, 600s, 126s and a Fiat minivan that once starred in an Indiana Jones movie.

A Rare Bear And A German Cat. A customer needs help to thin out the items inherited from her father. Plus, two brothers learn the worth of their late father's eclectic hoard.

A couple of Sherlock Holmes fans sell silverware, costumes and books after a flood hit their home. Plus, will army swords score big at auction.

How do they make an almost invisible hearing aid that connects wirelessly to a phone? How do they build the carriages for London's new underground railway.

How do they build remote-controlled underwater robots to do jobs too dangerous for human divers? How do they make the world's most cuddly teddy bears.