Open Country episodes available now on BBC iPlayer

Helen Mark is in Northern Ireland to follow the Ballinderry River from source to lough.

Helen Mark goes in search of the wild animals of Gloucestershire.

Helen Mark and Time Team's Mick Aston investigate the story of the Hanbury Crater.

Matt Baker discovers some alternative methods of transport in the New Forest.

Matt Baker explores plans to create a new Lanarkshire town based on Robert Owen's ideals.

Queen guitarist Brian May visits a village captured in time by a Victorian photographer.

Helen Mark meets Booker-nominated author Sarah Hall at Haweswater Reservoir in Cumbria.

Matt Baker visits London' s Hyde Park to discover the history of the Serpentine Lake.

Helen Mark unearths some new truths about Dunluce Castle in County Antrim.

Helen Mark visits Kirksanton, a possible site for a new nuclear power station.

Matt Baker reports on the dispute going on between anglers and canoeists on Welsh rivers.

Helen Mark looks at the battle between water supply and wildlife at Rutland Water.

Matt Baker discovers the Second World War secrets of the Peak District.

Helen Mark on the battle between fishermen and conservationists over the Firth of Lorne.

Helen Mark explores the history of Doggerland, a land lost beneath the waves.

Matt Baker takes a fresh look at one of our most visited landscapes.

Helen Mark meets the Scottish islanders determined to become self-sufficient in energy.

Helen Mark explores the north Devon coastline.

Matt Baker visits England's most scenic railway line, from Settle to Carlisle.

Matt Baker finds out just how idyllic life was for Mesolithic man on the Isle of Skye.

Matt Baker investigates the work of the Border Mires Project in the Keilder Forest.

Helen Mark finds out about Canon Frome, an eco-community in Ledbury.