Adventurer Ben Fogle takes Storm, his black Labrador, for a walk along the banks of the River Thames, starting out from Marlow. Broadcaster Emma Kennedy and her maltipoo puppy visit the Lake District, including Grasmere and Loughrigg. And presenter Helen Skelton and her dog Barney are on a voyage of discovery in Dumfries and Galloway - Scotland's so-called 'Secret Coast', with its mudflats and deserted beaches.

• Caroline Quentin
• Clive Anderson
• John Nettles