Nat Geo HD Schedule, Today (United Kingdom)

Declassified: A Rat's Tale: When a man infiltrates the Hells Angels, he's swept up in a horrific murder. 19 years on, Paul Derry tells his story for the first time. 16+. (S14, ep 1)

Triple Trafficker Takedown: Agents uncover 3 smugglers on a flight. A woman carries cocaine stamped with weird logos. Two women are caught with counterfeit watches. (S6, ep 6) RATING: NU12

Vermont Marble Factory: The guys search the factory where marble was made for the US Supreme Court. They also find White House blueprints in an old bomb shelter. (S1, ep 12). All Ages.

Breakfast in Shred: Get a look at the making of Alfajor cookies, Shreddies, Black Forest cake and the tons of cherries that bring it to life. Suitable for all audiences. (S3, ep 25)

Pasta Maker: Get an insider's look at the making of gigantic batches of lasagne, school-safe brownies, apple turnovers and more! Suitable for all audiences. (S3, ep 26)

Coffin Up Cash: Rich tries to make money by extracting and selling the silver from solar panels. Diego buys a casket, but are its gold engravings worth as much as he hopes?. All ages.

Platinum Payday: Diego empties his bank account and pawns his motorbike when he comes across a hoard of platinum. Is it the deal of a lifetime or has he made a huge mistake?. All ages.

Trouble in SoCal: Southern California is the site of twelve shocking shark attacks in just two years.

Bedlam in Brazil: Since the '90s, there have been more than 60, often fatal, shark attacks within the Recife area of Brazil. The question is, why? RATING: NU16 (S6, ep 7)

Teleshopping.

Night Shift: Corndog Shrimp & Chicken Tikka Wrap: It's all hands on deck on a Louisiana shrimping boat, while caterers rush to feed Canada's busiest airport. RATING: AA (S5, ep 25)

Night Shift: Bundt Cake & First-Class Lunch: As one kitchen crew tries to bake 440 cakes by morning, another cooks first-class meals for passengers aboard a train. RATING: AA (S5, ep 26)

Grounded: Boeing Max 8: Indonesian investigators must determine why a Boeing 737 Max8, one of the best-selling new airplanes on Earth, plunged into the Java Sea. RATING: NU 7

Spain's Galician Coast: Gordon and his daughter Tilly visit Galicia, exploring this stunning corner of Spain before taking on Michelin-starred chef Pepe Vieira and his son. 16+. (2 of 6)

Dunkirk: Idris Elba narrates this gripping story of Force K6, an Indian regiment in World War II, with one unit destined to be pivotal in evacuating Allied forces at Dunkirk. 12+. (2 of 4)

Rolls Royce Doctors Coupe: The hosts head to Lincolnshire where the embodiment of a luxurious era awaits: a 1929 Rolls Royce Doctor's Coupe. Rating: All ages (S9, ep 5)

Not My Meth: A mother travelling with her children to El Paso is caught with kilos of cocaine hidden in her car, while a boat carrying 388 kilos is chased down. 7+. (S7, ep 2)

Death In The Arctic: Mid-air hijack? Mechanical breakdown? Pilot error? Follow aviation experts as they dissect this mysterious case. U. (S13, ep 10)

Forest of Death: Freezing weather slows the Allies as they close in on the German border. US Rangers go after Hill 400 while the Nazis secretly prepare for the Battle of the Bulge. 12+.

Seconds From Disaster. A series of blunders causes a massive explosion at a nuclear reactor. Radioactive gas and debris spreads over Western Europe, with terrible consequences. All ages.

Peugeot 205 GTI: Tim and Fuzz team up with race legend Paddy Hopkirk to fix up their first ever rally car. Can they give owner and former amateur driver Jeremy a day to remember? RATING: AA

Deadly Exchange: Corporate Airlines 5966 crashes mysteriously in Missouri, but investigators uncover a conversation in the cockpit that set the tone for disaster. U.

Behind Closed Doors: A design fault leads to an explosion on a DC-10. Two years later and the same fault causes a similar tragedy. It could've been prevented so why wasn't it? All Ages.

Conquering Living Space: It's June 1941, and Hitler is busy invading the USSR. He's eager to conquer this 'living space'. All ages. (S1, ep 1)

The Decisive Fight: In October 1941, Hitler thinks his victory over the USSR is imminent, but his madness leads to an apocalypse on the Eastern front. All ages. (S1, ep 2)

Hitler's Rise To Power: From footage of Hitler relaxing in his Alpine retreat shot by Eva Braun, to haunting images of Jewish persecution, see the true story of World War II. 16+.

America's Deadliest Crash: Seconds after take off, American Airlines Flight 191 crashed, killing everyone on board. Gripping investigation into the US's worst aviation disaster. RATING: AA