You need to be 18 to accept a delivery. If the Delivery Assistant (or, in case of Click & Collect, the Tesco employee handing over the products) has doubts about the age of the person collecting the order, and the person does not voluntarily present his identity document to verify his age, the Delivery Assistant (or, in case of collection at the stores, the Tesco employee handing over the products) can refuse to give them the shopping. The Delivery Assistant (or, in case of Click&Collect, the Tesco employee handing over the products) will do the same if the identity document shows that the person in question is under 18 years of age.