Nectar cardholders will be awarded bonus points for reaching personalised targets in the Nectar app, based on their typical weekly shop.

The bonus Nectar points can be spent at partners including Sainsburys, Argos, eBay and ASOS amongst others.

‘The Great Big Fruit and Veg Challenge’ tracker sets personalised targets based on users’ typical shopping habits. It rewards customers who increase their intake of fruit and vegetables in-store and online, with three levels to complete.

Each customer will be given a personalised target, based on how many portions of fruit and veg they usually buy. Once the target is hit, they will earn points and move up to the next level, with hundreds of points up for grabs.

Examples of this include: earn 100 points when you buy 50 portions, 200 when you buy 75 portions and 300 points when you buy 100 portions.

There will also be six product badges, where customers can track the number of portions they buy of a certain product to earn a personalised points reward.

Jack Wallace, head of marketing at Sainsbury’s, said: “At Sainsbury’s, we’re all about helping make life a little easier and that includes helping our customers get more from their day-to-day purchases. ‘The Great Big Fruit and Veg Challenge’ is personalised to each Nectar customer and rewards them for increasing the portions of fruit and veg they buy. We hope our customers enjoy taking part, while getting more out of their points balance.”

Nectar points can be spent with a wide range of partners and online retailers covering entertainment, travel, food and drink, and experiences.

Points can be collected from almost 400 retailers and partners including Sainsbury’s, Argos, ASOS, Debenhams, Next, Topshop and Not on the High Street.