4: The Phone | Inventions That Changed the World

1: The Gun | Inventions That Changed the World

Jeremy Clarkson looks at key inventions that have made a global impact. This week traces the development of firearms and how t...

2: The Computer | Inventions That Changed the World

In Victorian times, computing involved crunching numbers with a pencil and paper. A century later, we rely on computers f...

3: The Jet | Inventions That Changed the World

Jeremy Clarkson tells the story of how Frank Whittle pioneered the jet engine and goes around the globe to explore the impact ...

Cutting, packing and distributing | Inside the Factory

The final stages of toilet paper production.

Early stages of toilet roll production | Inside the Factory

Gregg Wallace visits a sustainable forest in Sweden and then a pulp mill where the offcuts from the trees are tur...

Electrolysis of aluminium | Inside the Factory

Cherry travels to Scotland to visit the UK's last remaining factory that produces aluminium via smelting and electrolysis.

Electromagnets in a factory | Inside the Factory

Gregg Wallace investigates how large quantities of iron and steel are transported around the factory using electromagnets.

Enamel | Inside the Factory

Gregg Wallace investigates the enamelling process for the cast iron pots.

Episode 1 | Building Cars: Secrets Of The Assembly Line

As the Mini turns 60, buckle up for an incredible journey into the secret world of the car factory. Every 68 seconds ...

Episode 1 | The Five Billion Pound Super Sewer

Following workers across London as they race to build an enormous supersewer. The first episode follows the creation of the fi...

Episode 2 | The Five Billion Pound Super Sewer

Following workers across London as they race to build an enormous supersewer. The first episode follows the creation of the fi...

Episode 3 | The Five Billion Pound Super Sewer

Following workers across London over three years as they race to build an enormous supersewer on time and on budget. In this e...

From pulp to paper | Inside the Factory

In a toilet roll factory in Manchester two types of pulp are added to water, mixed together and dried to make toilet paper.

Iron ore mine | Inside the Factory

Cherry Healey visits the largest iron ore mine in the world.

Making hand sanitiser in a gin factory | Inside the Factory

Cherry Healey visits a gin factory that has also been producing hand sanitiser during the pandemic.

Melting metals | Inside the Factory

Gregg Wallace explores the process of melting together the metals to the a cast iron pot.

Moulding the pots with black sand | Inside the Factory

Gregg Wallace investigates how the pots are moulded using black sand.

Packet switching | The Secret Genius of Modern Life

Hannah Fry explains packet switching, the breaking down of files over the internet rather than sending as one big file.

Quality and design | Inside the Factory

Large mother rolls of toilet paper are combined and branded to ensure quality.

Quality control | Inside the Factory

Gregg Wallace visits the quality control area of the factory.