The commercial planting of domesticated mulberry trees to make pulp for papermaking is attested as early as the 6th century.^[1] Due to advances in printing technology, the Chinese paper industry continued to grow under the Song dynasty to meet the rising demand for printed books. Demand for paper was also stimulated by the Song government, which needed a large supply of paper for printing paper money and exchange certificates.^[2] The first mechanised paper machine was installed at Frogmore Paper Mill, Apsley, Hertfordshire in 1803, followed by another in 1804.^[3] The site operates currently as a museum.^[4]