When Tesco Clubcard was developed 30 years ago, using the technology of the time to analyse data was a long shot, but it grew ...

"However, Tesco was cheaper nearly half the time after ... It is clear that all loyalty cards do offer savings and points for customers, which might not save you much on a small shop - but ...

Which? has told shoppers to keep an eye out for secret codes on supermarket shelves to get an idea of when a deal will end ...

Ubacart app offers exclusive, personalised promotions, which are applied when shoppers present the digital loyalty card at ...