Following staff on the Leeds railways, as summer brings binge drinkers and trespassers.
The new Welsh Highland Railway covers 25 miles through the stunning scenery of Snowdonia.
Michael finds out how trains transformed the traditional British sport of fox hunting.
Michael samples Cheddar strawberries and visits one of the country's oldest piers.
Michael Portillo revisits the Settle-Carlisle line and explores the Ribblehead viaduct.
Michael travels back in time on the Embsay and Bolton Abbey Steam Railway.
Michael searches for the last liquorice grower in Pontefract and fishes for sea bass.
Michael goes birdwatching and learns to decipher traditional knitting patterns in Filey.
Michael finds out about Torquay's microclimate and spends some of Totnes's local currency.
Michael Portillo learns how to cook an authentic Indian curry in Birmingham.
Julia Bradbury crosses Cornwall, following a railway that has not operated for 140 years.
Julia Bradbury takes a walk along the stunning Mawddach estuary in north Wales.
Michael Portillo explores the Dumbarton shipyards that built the Cutty Sark.
Michael travels up the west coast of Scotland and looks at the parallel roads of Glenroy.
Michael discovers how the railways helped train commandos at Lochailort in World War II.
Michael discovers how the Victorians initiated the building of the Channel Tunnel.
Michael explores Kent's sparkling wine industry.
Michael gets a rare chance to drive a heritage diesel train and samples some Cromer crab.
The story of a train that brings medical assistance to people in rural areas of India.
Andrew Martin examines how the train came to shape the work of writers and film-makers.
A train driver faces one of the highest and steepest railway lines on earth in Peru.
Michael Portillo sets sail from Heysham to the Isle of Man.
Michael Portillo sees how the Victorian railways first fuelled invention in Wigton.
Michael Portillo discovers the unique cross-border history of Berwick-upon-Tweed.
Michael Portillo discovers the Victorian coal heritage of Cardiff.
Michael Portillo visits the home in Hartlebury of Queen Victoria's favourite bishop.
Michael Portillo discovers Britain's hidden micro-mines within the Forest of Dean.
Michael Portillo uncovers the oil fields hidden underneath England's seaside resorts.
A look at people who share a passion for steam with the volunteers at Llangollen Railway.
How volunteers turned a run-down old industrial railway into a modern wonder of Wales.
Andrew finds out how megacities stay fed, and joins Mexico City's traffic cops in the air.
Michael Portillo discovers how trains spread the word about Oban whisky.
Michael visits the hometown of Robbie Burns and finds out how to make haggis.
James Braxton visits a world of weird and wacky Victorian science.
Michael Portillo finds out about shoddy, a successful 19th-century recycling industry.
Michael Portillo takes a Turkish bath in the famous spa town of Harrogate.