City of Westminster
Site of Old Slaughters Coffee House where on 16th June 1824 was formed the society now known as RSPCA.
Royal Society for the Prevention of Cruelty to Animals.
The following text comes from RSPCA-Australia: On the evening of the 16th June 1824, a number of distinguished people, including William Wilberforce, assembled at the 'Old Slaughters' Coffee House' in London. They were called together by the Rev. Arthur Broome, a London vicar to form a society which would support the working of Richard Martin's Act. This Act was passed on the 22nd July 1822 and was against cruelty to farm animals, particularly cattle. The first animal welfare Society in any Country had been 'born'.
Site: Roy. Soc. for the Prevention of Cruelty to Animals (1 memorial)
WC2, St Martin's Lane, 77
Despite the address, the plaque is actually in Cranbourn Street.