McCain Roasts are made out of 100% British potatoes and beef drippings and vegetable oil. The Tesco are giving out 10,000 FREE Packs of McCain Roasts. To get your FREEBIE, Click on Coupon Code Link and Add this product in cart and then use the code GRLPMH at checkout page so the price will be deducted from total. While supplies last. Available to UK residents.