Tonight it is all about the duos. Two brothers pitch their venture making furniture from old aeroplane parts, a business couple are hoping for investment in their book buying and selling concern and a husband-and-wife team enter the Den with organic ... (more)dog treats they are hoping are best in show. Finally, two fitness enthusiasts face the multimillionaires with their healthy snacks business, but after a tough workout in the Den will they leave with any Dragon cash?