Overview: Marco and Kath Walker take over a pair of Grade II listed 17th and 18th century cow barns from their local farmer in Wellington, Herefordshire. The barns are tumbling down, the couple have their two young children in tow, they've never done anything like this before and are complete restoration novices, and the project is beset with problems from the start. George offers much needed advice throughout the build and discovers how these buildings and the surrounding farm helped to revolutionise cattle farming in the UK.