Found these at my local Sainsbury's, it also shows up online but the link has disappeared for some reason.
Other varieties available;
Fox's Ginger Crunch Crinkles (250g) 25p
Fox's Golden/Chocolate Fudge /Ginger Crunch Creams (200g) 37p
Fox's Ambers Caramel/Original Cookies/Cookies (170g) 69p
Good quality biscuits at low prices what more could you ask for, these always fill that gap in my belly :D