Caravan, Tree Tent and Tube Carriages

George meets Ruth Tidd, who is attempting to turn an old caravan that was once used as a home for chickens into an ice cream parlour. He also follows the building of the country's first ever tree tent and is lucky enough to get to try it out, as well as getting the chance to visit some very unique offices built from four old tube carriages. Finally, he travels to Barcelona to take a closer look at the tiny studio flat that thinks it's a five room apartment. And on his own caravan build, George designs a sofa that doubles up as a bath.