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Michael Portillo is in the North Yorkshire seaside resort of Scarborough to explore one of the greatest royal fortresses in England.

Michael Portillo travels from the seaside resort of Hornsea, to Spurn Point, where he learns about a life-saving 19th-century invention.

Michael Portillo reaches Lincolnshire, where his coastal railway journey ends. In Grimsby Town, he investigates a new stage in the town's history.

Michael Portillo heads to Northern Ireland's Causeway coast beginning a new journey along the north and east coasts through Ulster and Leinster.

Following Operation Barbarossa in 1941, the Soviet Army battled the Germans almost alone for two years. Laurence Olivier recounts their efforts as the epic series continues.

The ultimate guide to World War II, narrated by Laurence Olivier. Bomber Command are unable to hit their targets precisely and attack German cities under cover of darkness.

The hugely respected chronology of WWII. Churchill described Italy as the 'soft underbelly of the crocodile', thinking the Allies could cut through it to reach Germany.

Laurence Olivier narrates the acclaimed documentary series on WWII. Hear how Japanese advances across Asia forced the Allies into ignominious retreat.

World War II as told by the late Laurence Olivier. Hear more about life on the British Home Front, a time of gas masks, digging for victory and evacuation.

Laurence Olivier narrates this 26-part series, a milestone in TV history. Germany's progress loses momentum as the tide of the war turns in favour of the Allies.

England became a supply dump as the British and Americans assembled the largest invasion fleet in history for Operation Overlord on 6 June 1944. Laurence Olivier tells all.

Hear how the Netherlands lived under Nazi rule for four years and how its people decided where their loyalties lay. Narrated by the late, great Laurence Olivier.

Laurence Olivier provides the narration to this World War II retrospective. Hear how 1944 saw the steady disintegration of the German war machine, as the Allies advanced.

Stunning film sequences and unusual life-forms abound in Sir David Attenborough's natural history of the oceans, which covers the fragile ecosystems of the coral reefs.

A history of the deep seas, narrated by Sir David Attenborough. How do the tides affect marine life like stingrays, snails and dolphins? Find out here.

David Attenborough explains in his own inimitable way how animals from in and around the sea manage to make use of the constantly changing areas where land meets water.

Marine life around the world, from dolphins and tusk fish in a tropical coral reef to walruses struggling to cope with the impact of climate change on the polar north.

Creatures that live in volcanic hot spots on the ocean bed, areas that reach temperatures hot enough to melt lead and which may hold the secrets behind all life on Earth.

Dave gets wind of a possible free lunch at the officers' mess when he heads off to collect a stylish Swedish Volvo P1800S from an RAF base in the Midlands.