BBC Four Wednesday

The former steeplejack looks at structures from the Middle Ages, visiting England's oldest fortified building with a moat, Stokesay Castle, where he examines the huge roof timbers

Ben Robinson unearths the past of Greyabbey, a village on Northern Ireland's Strangford Lough and discovers the history of its money-making kelp industry

Part one of two. The historian joins a team recreating a pioneering 280-mile expedition through the natural wonder that was led by explorer John Wesley Powell in 1869

Part one of two. Documentary delving into private film collections from the Nazi era to reveal how ordinary Germans lived during peacetime and the experiences of frontline soldiers

Actor Spencer Banks reflects on his leading role in the 1974 Play for Today, Penda's Fen - a coming of age story written by David Rudkin and directed by Alan Clarke

Late spring 1973, and pastor's son Stephen must come to terms with his own identity amid societal pressure, religious guilt and his own imaginings. Horror, starring Spencer Banks

Part one of two. The historian joins a team recreating a pioneering 280-mile expedition through the natural wonder that was led by explorer John Wesley Powell in 1869

Part one of two. Documentary delving into private film collections from the Nazi era to reveal how ordinary Germans lived during peacetime and the experiences of frontline soldiers

The former steeplejack looks at structures from the Middle Ages, visiting England's oldest fortified building with a moat, Stokesay Castle, where he examines the huge roof timbers

Ben Robinson unearths the past of Greyabbey, a village on Northern Ireland's Strangford Lough and discovers the history of its money-making kelp industry