BBC Four HD Wednesday

Archaeologist Ben Robinson explores the harsh North Yorkshire coastline that surrounds Staithes, as he finds out how the village was built to be a safe haven

The presenter takes a 20-mile walk along the Kennet and Avon Canal, learning about the waterway's history, and concluding her journey at the Caen Hill flight of locks

Victoria Coren Mitchell narrates the story of how Britain's phone network was built, from early call boxes to the Post Office Tower, and its impact on the public

Exploring Japan's 2011 tsunami through the eyes of children who witnessed the disaster, focusing on two schools that had to deal with its aftermath

Yosser struggles with the police, social services and his own deteriorating mental health to hold his family together following his wife's departure. Bernard Hill stars

George reminisces about his politically active youth. Acclaimed drama, starring Peter Kerrigan and Michael Angelis

Part two of two. Professor Jim Al-Khalili meets the scientists attempting to capture and study dark matter, and finds out how dark energy might be tearing the universe apart

Archaeologist Ben Robinson explores the harsh North Yorkshire coastline that surrounds Staithes, as he finds out how the village was built to be a safe haven

The presenter takes a 20-mile walk along the Kennet and Avon Canal, learning about the waterway's history, and concluding her journey at the Caen Hill flight of locks

Victoria Coren Mitchell narrates the story of how Britain's phone network was built, from early call boxes to the Post Office Tower, and its impact on the public