Martin Lewis' Money Saving Expert has warned Tesco shoppers "You have three weeks". MSE has warned Tesco shoppers: "You've got three weeks left to spend £17 million of expiring Clubcard vouchers – or extend them with our trick."

If you've got a Tesco Clubcard, check when your vouchers are due to expire as there are just three weeks left to spend or extend nearly £17 million-worth before they run out on Friday 31 May, the BBC and ITV star's site has warned.

More than £27 million in 'Reward Partner' codes – vouchers that have been exchanged to spend at various third party retailers – are set to expire over the next five weeks - too, according to a new guide and warning on the MSE site.

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The vouchers will no longer be valid to use after midnight on May 31. Tesco Clubcard vouchers are valid for two years, so these were first issued in May 2022. Clubcard vouchers can be used towards your Tesco shop, or you can double their value by using them with a Clubcard Reward Partner.

You can also use a Rewards Partner to extend your Clubcard vouchers. It involves making a small purchase - for example, just 50p - on the Tesco Clubcard Rewards webpage. Your remaining Clubcard voucher balance will then be credited back to you as points.

These points will be turned into vouchers again when Tesco next issues you a Clubcard statement. Tesco shoppers get one Clubcard point for every £1 spent on groceries in stores and online, or one point for every two litres of fuel you buy at a Tesco petrol station.

Additionally, every £1 spent on Tesco Mobile is worth one point, while every £4 spent on a Tesco credit card is also worth one point. You'll also get one point for every £1 spent using a Tesco Clubcard Pay+ debit card.