1. The Motorway Map of Britain

A surprisingly bumpy ride through our love-hate relationship with motorways. The godmother of the road sign discusses her iconic designs. Plus, our favourite and most hated service stations.

2. The Canal Map of Britain

A look at Britain's beloved canal network via a fact-filled cruise along the first superhighways of the Industrial Revolution. In the age before mechanisation, a frenzy of canal-building saw a new army of workers carve out the British landscape, digging out hundreds of miles of waterways using picks, shovels and muscle.

4. The Sewer Map of Britain

Investigating the hidden secrets of the sewers, from London's current Tideway Tunnel, to the Romans' solution almost 2,000 years ago.

5. The Underground Map of Britain

A fact-fuelled ride through London's tube network, mapping out the history of the world's first - and most iconic - underground railway system. Viewers discover how this 160-year-old marvel of engineering manages to carry 1.3 billion passengers a year.

6. The Coastal Map of Britain

The rise and fall of the UK's greatest ports, from the first international traders arriving on the coasts of Devon and Cornwall, through the arrival of the Romans, Elizabeth I's extension of British territory, and the huge impact of the tea trade and the Industrial Revolution