Porcelain factory thought to be the first in England. Based in SW London, it dated from the 1740s, when it was known as the Chelsea Porcelain Works. It produced softpaste porcelain in imitation of Chinese high-fired porcelain. Later items are distinguished by the anchor mark on the base. Chelsea porcelain includes plates and other items decorated with botanical, bird, and insect paintings. The factory was taken over by William Duesbury of Derby 1769 (after which the so-called `Chelsea-Derby' was produced), and pulled down 1784.