Actor John Nettles and his family dog Milo enjoy a coastal walk on the beautiful island of Jersey. Impressionist Jon Culshaw walks the foothills of Snowdonia with his black Labrador Alfie, visiting a castle where Welsh princes once ruled. And presenter Helen Skelton takes Blue Peter dog Barney on a day out in the glorious Pennine wilderness of Teesdale, ending the day in the pretty village of Romaldkirk.