Free Caffè Nero Drink, After Banking Three Codes From Specific Yeo Valley Products

Bank three codes from specific products (includes their milk and multi pack products – such as 4 x 100g Yeo Valley Organic Greek Style Honey).
You then receive an email, which provides a promo code which can be entered into the Caffè Nero app for the drink.
Email states the drink code is valid for fourteen days, but the voucher on the app, which I added today states it finishes on the 13th November.