They say there is no such thing as a free lunch....well that is not the case here. Get a sandwich, crisps & drink from any of your favourite places (Tesco, Sainsbury's, Boots, Pret a Manger, etc) up to the value of £4 completely free. Be quick though, this offer is only on for a limited time! Offer available to new Topcashback members who can claim 100% cashback