M&S shoppers are only just noticing they can get free food through the supermarket's Sparks card loyalty scheme.
The Sparks scheme was first launched back in 2015, and initially rewarded shoppers with points when they spent in store or posted product reviews.
However since then, the upmarket retailer has simplified the scheme introducing instant rewards and more tailored offers - such as 30p off drinks when you go to a M&S cafe.
