In 1921 This shop was owned by 1921 By one William Conway, horse flesh butcher. The address was No 20 George Street London
The 1889 Horse Flesh Act decreed On and after the 29th September 1889, it will be unlawful for any one to sell, offer, expose, or keep for sale any horse-flesh for human food elsewhere than in a shop, stall, or place, over or upon which there shall be at all times painted, posted, or placed, in legible characters of not less than four inches in length, and in a conspicuous position, and so as to be visible throughout the whole time, whether by night or day, during which such horse-flesh is being offered for sale, words indicating that horse-flesh is sold there.
And no one is to supply horse-flesh for human food, to any purchaser who has asked to be supplied with some meat other than horse-flesh, or with some compound article of food which is not ordinarily made of horse-flesh. For the purposes of the Act, the term 'horse-flesh' is to include the flesh of asses and mules, and shall mean horse-flesh, cooked or uncooked, alone, or accompanied by, or mixed with any other substance.
Amazing what pops up when you are looking for something totally unrelated.