Golden Granulated Sugar is the unrefined alternative to the standard white sugar. However, the price of own-label has rocketed recently in Tesco and Sainsbury's to £1.88! for a 1kg bag. I think the Billingtons brand is still reasonably priced at around £1.35.
Recently the Morrisons price has been around £1.35, but at £1 it is worth stocking up when you see what Tesco and Sainsbury are charging!