Do you mean skins to be tanned or fleece to be woven?
Skins need to be salted within a couple of hours of slaughter then can be sent to Devonia or to Nicki Port. There is also Skyeskins but they are not really set up for mass production.
If you mean fleeces to be woven into rugs, this can be done through The Natural Fibre Co, who will spin the fleece then forward the yarn to a weaver in Wales.