There is / was a velvet mills ( and shop, because I recall buying a lovely length of green devore [can't "do" accents on here] velvet in the late 60s / early 70s) near Denholme near Keighley in West Yorkshire. I've a feeling it may even have been called "Denholme Velvet" - but I've also a feeling that the last couple of times I've been near there, clearance and/or new building was taking place on the site. Local trade directories may help?