Tim Dunn and Siddy Holloway explore the very first tunnel under the Thames.
All episodes for series 4 of Secrets of the London Underground
S4 E4 · South Kentish Town
Tim Dunn and Siddy Holloway explore the disused station at South Kentish Town.
S4 E6 · Ruislip Depot
Tim Dunn and Siddy Holloway explore the maintenance depot at the end of the Central Line.
S4 E7 · Northumberland Park
Tim Dunn and Siddy Holloway explore the maintenance depot at Northumberland Park.
S4 E9 · Gloucester Road
Tim Dunn and Siddy Holloway meet at Gloucester Road in London's museum quarter.
Smoke & Steel
Description: Examining the Industrial revolution - the age of smoke and steel.; Category: Engineering; 6 episodes available.
Hornby: A Model World
Description: Hornby reveal how their dedicated team strive to shrink a new generation of machines.; Category: Factual Entertainment; 20 episodes available.
The Architecture the Railways Built
Description: Tim Dunn explores the stunning architecture that lines the railway network.; Category: Engineering; 40 episodes available.
Guy Martin's Lancaster Bomber
Description: The history enthusiast honours Lancaster bomber crews of the Second World War.; Category: Military & War; 1 episode available.
Train Rescue Down Under
Description: Trains are the lifeblood of Australia, and dedicated crews work hard to repair them.; Category: Factual Entertainment; 10 episodes available.
Yorkshire Steam Railways
Description: A behind-the-scenes look at the North York Moors Railway.; Category: Factual Entertainment; 9 episodes available.
David Jason: Planes, Trains and Automobiles
Description: The actor discovers the machines that made America and changed the world.; Category: Factual Entertainment; 5 episodes available.
Aussie Road Train Truckers
Description: Documentary following a cast of road train truck drivers across the Australian Outback.; Category: Factual Entertainment; 8 episodes available.
Guy Martin's Last of the Vulcans
Description: Guy joins a select crew of engineers working on the last functioning Vulcan bomber.; Category: Factual Entertainment; 1 episode available.
Fred Dibnah's World of Steam, Steel and Stone
Description: Celebration of the many sides of Fred Dibnah; Category: Engineering; 12 episodes available.
Guy Martin's World War 1 Tank
Description: Guy builds a working replica of a WWI tank and drives it at a Remembrance Day parade.; Category: Factual Entertainment; 1 episode available.
Guy Martin's Spitfire
Description: Guy joins the two-year restoration of a Spitfire that was buried in a French beach.; Category: Engineering; 1 episode available.
