I was just thinking about my younger years and remember my parents had a book of green shield stamps, i wondered if I had imagined these stamps so googled and it says it was like a loyalty scheme where you could spend stamps on products but it changed when Tesco withdrew and then it became Argos and money only, no stamps. I had no idea that Argos originated from Green Shield Stamps.
I am in my fifties so dont expect many of you to remember them