Ten years in the making, this is the longest running Grand Designs ever. In 2007, Ed and Rowena Waghorn started to build a handcrafted five bedroom house on an eight acre smallholding in Herefordshire. Their budget was just £100k. Made from individually carved wooden beams and walls of straw and clay, the heart of the house was to be a huge medieval style hall, complete with massive stone fireplace and a glorious cathedral-like window with panoramic views across the valley. Ed decided to do most of the work himself. Progress was slow. Four years in, the house was still a shell. In 2012 Kevin McCloud decided to follow the build for another five years. In the end, it's just possible this house might turn out to be a masterpiece.