Sales of raw drinking milk are prohibited in Scotland following a spate of deaths in 1983. While it is legal in England, Wales, and Northern Ireland, the only producers registered by the Food Standards Agency are in England. About 200 producers sell raw, or "green top" milk directly to consumers, either at the farm, at a farmers' market, or through a delivery service, as it is legal to supply unpasteurised raw milk directly to consumers, but illegal to be sold to a retail shop. The bottle must display the warning "this product has not been heat-treated and may contain organisms harmful to health", and the dairy must conform to higher hygiene standards than dairies producing only pasteurised milk.