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We鈥檙e wandering through Wales in the company of Louise Gostelow and David Harper, on the fourth leg of this trip. They鈥檒l be practicing a few 'useful' Welsh phrases, hoping to endear themselves to the antiques dealers in the area.

On their travels, Louise samples a British first - a drink that sold all around the world before it took off in its hometown - and David heads to the coast to hear the melodious sounds of a Welsh male voice choir, before unleashing his own vocal stylings on an unsuspecting audience.

On the shopping front, Louise is hoping to be sitting pretty with her ever-growing collection of chairs - and the odd bit of ammunition thrown in for good measure. David, meanwhile, is trying to step out of his comfort zone. He鈥檚 on a mission to buy things he doesn鈥檛 have the first clue about. We鈥檒l find out which strategy pays off when they hit the auction room in Liverpool.