A little-known Tesco Clubcard feature reveals a hidden detail about special offers.

It’s a money-saving trick that it seems many shoppers have been missing out on for years. Discounts available only to Tesco cardholders incentivise shoppers to snap up yellow-labelled price cuts – and rack up Clubcard points.

Now, a savvy shopper has revealed a way to discover how long these  Tesco special offers will last. And it’s all to do with an easy-to-decipher code.

Content creator Gemma Bird, AKA…