Nat Geo HD

7+.

Chris Barrie takes a Routemaster bus down to his local skidpan and fires up a Vulcan bomber as he investigates the greatest British machines of the 1950s. 7+.

Three harrowing disasters reveal the threat of poor weather to a safe landing, with heavy rain, thunderstorms and treacherous crosswinds. (S6, ep 4) 7+.

Looks at the 1999 Paddington train crash. Who was at fault? And could the devastating collision that killed 31 people have been avoided? 7+.

In 1945, HMS Venturer intercepted a U-boat set to deliver German wonder weapons to Japan. The result was history's only sinking of its kind. (S2, ep 5) 7+.

It's September 1943 and Operation Avalanche is underway. But, the battle through Italy to liberate Rome will be one of the longest and bloodiest campaigns of the war. 7+.

When a massive explosion tears a hole in a 747 over Hawaii, the search for answers ultimately leads to a deadly short circuit. (2 of 10) 7+.

A plane carrying footballer Emiliano Sala vanishes over the English Channel, but questions are raised when investigators find the wreckage. (3 of 10) 7+.

Allies in WWII face three missions: a trapped British regiment, a Canadian cavalry on a causeway and an American unit racing for a Rhine bridge.

The story of US atomic experiments and the warships they destroyed - including a submarine and a mighty aircraft carrier. 7+.

As wild weather and traffic convoys cause havoc, Thord races to rescue stranded drivers. Plus, Ole Henrik takes the company's new truck on its first mission. (S9, ep 4) 7+.

One of the greatest fortifications in warfare history, the campaign to breach Hitler's Siegfried Line cost 140,000 American casualties. (S2, ep 2) 7+.

When two Boeing 737s crashed two years apart in almost identical circumstances, investigators raced to find the cause. Was there a fatal flaw? 7+.

Following the 2019 fire that almost destroyed Paris's iconic Notre Dame Cathedral, a team of experts set out to restore this historic landmark. (1 of 2) 7+.

Five years after the fire, get exclusive access to Notre Dame's one billion restoration, now entering its final stages. (2 of 2) 7+.

Supersize building projects revealing how the construction of a 26-kilometre subway line through Rome has unearthed some of the most important discoveries of the modern age. 7+.

Experts investigate an unexpected explanation for the fatal crash of Air Moorea Flight 1121 when they hear its pilot's anguished cry on the cockpit voice recorder. 12+.