In 1995, Tesco introduced a loyalty programme that would not only change the way Britain shops, but also redefine how retailers engage with their customers. The Tesco Clubcard was a pioneer in the ...

When Tesco Clubcard was developed 30 years ago, using the technology of the time to analyse data was a long shot, but it grew into a scheme that birthed retail loyalty as we know it today.

Weeks before the launch of Tesco's Clubcard loyalty scheme in February 1995, Italian-born Frank Riolfo worked out an ingenious but terrifying way to demand £250,000 from the supermarket.