Quest HD Saturday

Henry Cole potters through the Highlands of Scotland on his brand new Honda Africa Twin, a versatile bike perfect for the route known as the 'Tartan Titan'

The Emerald Isle doesn't disappoint as Henry Cole rides Triumph's new incarnation of the famous Bonneville motorbike and heads to Giant's Causeway

In Poland, Mike and Elvis find a weathered Polski Fiat 126. After their restoration, they go on a snow-covered joyride alongside other loyal 126 fans

Keen to get into the booming classic truck market, Mike Brewer manages to find an unfinished 1950s Ford F-1

Mike Brewer travels to America in search of a Willys Jeep, but the vehicle he finds needs major repairs and high transport costs to the UK could jeopardise his making a profit

Mike Brewer buys a G Wagen, a popular German 4x4. Mechanic Edd China spruces it up with a 2012 front end and rear lights, but it may not be enough for them to turn a profit

Mike Brewer finds a Humvee to work on, and he and Edd China create a four-wheel-drive camping vehicle capable of venturing to places no camper has been before

Mike Brewer seeks a challenge in the form of a 1970 Ford Bronco, which is riddled with rust. The project seems to be seconds from disaster, but Edd China keeps his cool

In Poland, Mike and Elvis find a weathered Polski Fiat 126. After their restoration, they go on a snow-covered joyride alongside other loyal 126 fans

The Grand Prix of Aragon sprint race (Start-time 3.00pm). Coverage of part of the eighth round of the season, held at MotorLand Aragon in Spain

In Somerset, Sam and Henry meet a man who's been collecting cars since 1963. The guys are excited to uncover an Austin 7 and a De Dion-Bouton

Sam and Henry visit one of Britain's biggest dealers in second-hand milk floats. This quirky collection features a beautiful 1959 Chevrolet El Camino

Sam and Henry look through an eclectic collection in Hertfordshire. There's lots for the guys to admire, including a Humber Sceptre and a model aircraft

Henry and Sam are in Oxfordshire to rummage through a collection of vintage tractors and automobiles. They find a Suzuki SB200 and paraffin dispenser

Henry and Fuzz find a Triumph Terrier in Oxfordshire. Can they breathe life into this little legend and get it back on the road?

In Cambridgeshire, Henry and Fuzz uncover a Suzuki GSXR Slingshot. Can they tame this superbike and bring it roaring back to life?

In Wales, Henry Cole converts a Royal Enfield motorbike into a classic cafe racer and Simon O'Brien gets an 1980s pinball machine back to its best

Henry Cole and Simon O'Brien search for more items to fix up and sell on, visiting the Isle of Wight to meet a couple who have lots of unwanted militaria

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

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

Paul Mackie hires a massive dozer to uncover a gold deposit that could be worth millions. The Poseidon Crew scales up their search for fine gold

In their bid to set up a second sapphire mine, The Rubyvale Boys face equipment failures. And the Neils risk their lives in an abandoned quartz mine

A team of leading experts dig for major discoveries in Egypt's entire Eastern and Western Valley of the Kings to unravel its final secrets and create the ultimate treasure map

More everyday items are put under the microscope, this time examining how sawhorses and toolboxes, sorbet pops and school buses are made

The manufacturing processes behind sanders, solid terrain models, Stucco and high-speed roll-up doors, and how techniques have developed over time

Developments in the manufacture of turntables, steam engines, playground equipment and non-stick pans

The manufacture of garden forks, English toffee, paint chip cards and Bundt pans, and how processes have developed through the years

Buying goods from home

Buying goods from home

James devises a solution for applying sun cream solo. Plus, he has a plucky plan to deal with noisy neighbours and plays records on a pottery wheel