Vice for workbench (Caldecott OX14)

Small vice for fixing to a workbench (nuts and bolts included). It's covered in surface rust after being left in an outbuilding for years, but the slide is oiled and works smoothly. On the other hand, the fixing bolts have seized, but will surely come loose if squirted with WD40 and tapped with a hammer, and even if not you'll just have the bolts standing proud of the base.