Martin Lewis' MSE issues seven-day warning to anyone who shops at ASDA and Lidl

Money Saving Expert (MSE), the website founded by ITV's Martin Lewis, has issued a seven-day warning to anyone who shops at supermarket giants ASDA and Lidl. The warning impacts anyone who shops at any ASDA or Lidl supermarket in the UK.

In its latest newsletter, Martin Lewis' MSE advised shoppers to get a move on as they now only have a week left to act. By doing so, shoppers could slash their weekly shopping bill.

The latest MoneySavingExpert newsletter advised that the supermarket giants are offering £5 off vouchers but only for a set amount of time. Both shops have offers on until February 28 - meaning shoppers only have seven days to take action.

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From today, Lidl is offering one million £5 off vouchers via its app to spend by Tuesday, February 28. Meanwhile, newbies to the ASDA Rewards app can get a £5 voucher to spend on almost anything in-store or online, until the same date.

Here is everything you need to know about claiming and using the money off vouchers, according to the ECHO:

How to claim the voucher

The Money Saving Expert newsletter said that if you're a newbie to the ASDA Rewards app and you download it you can get a £5 voucher in your 'Cashpot' after completing your first online or in-store shop. The voucher can then be redeemed on your next shop.

Once you claim the voucher you then have six months to spend it. ASDA told MSE that there is no minimum spend required to get the reward, so you could buy a cheap item like a single loose banana for 14p and still get £5 in your Cashpot.

How to use the voucher

The ASDA app works a little differently to other supermarket loyalty schemes