Supermarket loyalty cards: What's on offer and which do shoppers like best?
![Supermarket loyalty cards: What's on offer and which do shoppers like best?](https://i.dailymail.co.uk/1s/2024/03/16/16/82543375-0-image-m-33_1710605516687.jpg)
From Nectar to Clubcard and Sparks to MyWaitrose, most supermarkets now give shoppers the option of a loyalty scheme. But how generous are they, and which do shoppers like best?