High Street TV 4

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.

Learn how platinum cleans your car's exhaust fumes, and find out how they build a space station 360 kilometres above the earth.

Learn how they turn a family car into a tough rally car, and how they make titanium, the metal that the modern aerospace industry relies on.

Mike goes looking for a Humvee. He and Edd create a four-wheel drive camping vehicle that can take you to places no camper has been before.

Mike discovers a 1985 Maserati Bi-Turbo that was converted to electric in the early 90s. Can they work on their first ever electric project and still profit.

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.

Ever wondered how everyday items such as incense cones and model jet engines are made? Find out how these familiar objects are formed.

Ever wondered how everyday items such as beet sugar and electric roadsters are made? Find out how these familiar objects are formed.

Simon's transformation of one item leaves the owner speechless and expert evaluator Elisicia Moore horrified. Henry works on an air pump and a display cabinet.

Dave and GT's hunt for a 'Batmobile' mystery car reveals a 'yank-tank' 1958 Chrysler Imperial Crown. And a shabby 1989 Range Rover is returned to its former glory.

The guys revive a Bavarian beauty when they rescue a 1970 BMW 'Neue Klasse'. A desert dash unearths two Mini Moke shells that could make a big profit.

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.

After a frustrating day, the Ferals hit a gold hot streak. An injury rocks the Gold Timers, while Shane and Russell struggle with their homemade sluice.

Prospectors Jacqui and Andrew uncover gold in Queensland. The Poseidon Crew get some exciting news, while the Dust Devils spend big on new equipment.

Scotty gets lost while exploring hidden tunnels on the Bishop's massive claim. Jack and Mickey are nearly crushed as the Tarantos try to move their machinery.

The Bushmen attempt drilling for the first time with a 50-year-old exploration rig. Plus, the Mooka Boys go on a treasure hunt in a scorpion-riddled mine.

Henry and Sam scour Britain's sheds in search of vintage treasure to restore and sell for a profit. In Surrey they find Pontiac ambulances and automotive sculptures.

In Cornwall, Henry and Sam meet a collector whose cottage is full of memorabilia, penny farthings and lights of all description - watched over by Buster, the guard rabbit.

Henry and Fuzz head to Southend to visit Graham's shed full of bikes and muscle cars. They find a Dutton kit car and rows and rows of rare bikes.

Henry and Fuzz visit a farm near Colchester with vintage tractors galore. The boys come away with a classic Fordson and some old traffic lights.

Henry and Simon head to Burton-on-Trent where they search through a petrol head's collection. Henry gets excited about a dump trump and a remote-controlled plane.

Simon's transformation of one item leaves the owner speechless and expert evaluator Elisicia Moore horrified. Henry works on an air pump and a display cabinet.

Mike is looking for a British classic and finds an XK8 Jaguar, but it's not in good shape. Will Edd be able to fix it up within budget or is this project about to stall.

Ceramics expert Kirsten saves a collection of broken vegetable patch signs. Plus, Will attempts to preserve a precious 100-year-old horse and cart ornament.

In the New Forest, Hampshire, Henry and Sam visit a collector of Americana. What rare bicycles and classic sportsters will they find in his sheds.

In the Midlands, Henry and Sam visit the sheds of a bike builder. He has a collection of rare bikes, but it's the surprise in his freezer that attracts the duo.

Toy restorers Julie and Amanda put a dislocated doll back together. Luthier Julyan restores an acoustic guitar and ceramics expert Kirsten repairs a symbolic sculpture.

The team restore a drum kit with magical memories. Plus, the oldest item ever to pass through the doors - a 2,000-year-old terracotta figure - is put back on its feet.

How do submarine crews survive submerged beneath the ocean for months at a time? Plus, how do crash test dummies make driving safer.

Get behind the wheel of the world's biggest land vehicles as they mine 90,000 tons of coal a day, and hunt for alligators in the Florida swamps.