The Vegetarian Society of the United Kingdom is a British registered charity which was established on 30 September 1847 to promote vegetarianism.

Alcott House in Ham, Surrey, was the home of a utopian spiritual community and progressive school which lasted from 1838 to 1848. Supporters of Alcott House, or the Concordium, were a key group involved in the formation of the Vegetarian Society in 1847.