My mate (who buys a fair few bits and bobs) always reccommends them, they are local to us so can't really comment on the delivery, but the service and the price always seem good.
I've used them a few times - usually very fast delivery. They've been around for quite a few years. Seem to recall that if you order on line you get an unusual amount of confirmation emails - your order has been accepted, payment authorised, goods shipping, goods shipped etc.
Used them first when they were just off Leeds Road in Bradford. Prices CAN BE very good but I'd always check around. If you go to the Warehouse Near Tong then you can be hanging around a while. Delivery was pretty quick when I wanted them delivered. Not had any problems.