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Helen Mark unearths some new truths about Dunluce Castle in County Antrim.
BBC Radio 4
Helen Mark visits rural 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.
BBC Radio 4 FM
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.