Two artists convert an old district library van into a mobile home and art studio in Gloucestershire, while a couple who found a Second World War bunker beneath their garden decide to turn it into an office, with a motorised lift to bring light into ... (more)the space. George visits a Japanese town that recycles 80 per cent of all waste, including a pub where everything is recycled, from the windows to the beer itself, and George and Will's supersized tree house is ready to be installed.