Lake Vyrnwy in Wales is gearing up for the warmer spring days ahead, when there will be a huge increase in migratory birds and tourists. Matt Baker and Ellie Harrison immerse themselves in the landscape, discovering the history of this man-made Victorian reservoir. Ellie finds out about the bird species that make the surrounding forests and breathtaking moorland home. The Evans family farm the moorland for the RSPB, and Matt helps out as they gather in their ponies for health checks and get their ewes ready for lambing.

Meanwhile, Adam, Charlotte and Tom are joining forces for a special report on what future global trade deals could mean for UK farming and food production.