The Great Pottery Throwdown (More4, BBC2, 2015-) is, with its playful filth and flair, the very best of British television. It is unrelentlessly joyful, a triumph of quaint skill and beauty, and a simple celebration in the delight of hobbies. The show’s format derives straight from the giants of GBBO, but whereas the smells and taste of baked goods are trapped by television, pottery makes the perfect on screen subject.