Martin Lewis has revealed a clever trick that could see Tesco shoppers bag up to £50 in bonus Clubcard points on his website. The supermarket giant is testing out a new “Clubcard Challenges” scheme, where customers are tasked with completing certain challenges to earn extra points.

Some of these tasks might include “spend £20 on our Summer barbecue range over the next six weeks” or “spend £10 on plant-based meals”. If selected for the promotion, you’ll be presented with 20 challenges, but…