This factory was established in South London by John Doulton in (1793 - 1873). It was originally called ' Doulton and Watts ' and specialised in stoneware sanitary, laboratory and other useful goods. About 1860 it began to revise earlier types of stoneware and two years later produced well-known salt-glazed ware with a blue decoration. This factory has a large artistic history especially from the Lambeth School of Art. Artists such as the Martin brothers and George Tinworth worked with the company. While the French painter J.C Cazin introduced the ' sagraffato ' technique in 1870. The Barlow sister used these techniques to create popular decorative wares with animals and the scenes known as ' Barlow wares '. Dolton became collectable items especially by museums and continental buyers and its reputation, range of goods and size of the factory grew right to the present day.