Gaby Roslin hosts the grand final and reveals which two teams with their celebrity captains have made it through to compete for the winner's trophy. The fun challenges for dogs and their owners are Top Gun Dog, Desert Island Sit and Duck Pond Derby. As ever, it all comes down to the 'Bark Off', an obstacle course which includes Barking Tube, Sherwood Forest and a famous ferry ride.

• Gaby Roslin