Free Walkers Crisps: Grab a FREE six-pack of your preferred flavour (Ready Salted, Salt & Vinegar, Cheese & Onion or Prawn Cocktail) as part of Valentine's Day promotion. Click on "GET FREEBIE," enter details and send the coupon to receive an email with a voucher link for pick-up at your local Tesco store within 20 minutes after unlocking the barcode, not valid when used alongside Tesco Clubcard or excluding baked varieties. Hurry up before they run out!