Did you know there are "secret codes" on labels in supermarkets like Tesco, Waitrose and Sainsbury's that can help you save money?

Consumer watchdog Which? has taken to TikTok revealing the often overlooked fine print on supermarket labels that could help millions of Brits save on their weekly shop.

When you are out shopping and spot a "tempting promotion" FOMO (fear of missing out) sets in and it can be hard to resist the urge to snap up the product there and then.

But there are "secret codes" on supermarket labels across the UK that tell you exactly when a promotion is going to end, Which? explains.

The consumer watchdog added: "That means you can see something cheap, buy one to try, then know how long you've got to stock up in bulk if you like it."

How to spot secret supermarket codes that will help you save money

At Tesco, the date an offer ends, including Clubcard prices, is written backwards in small print on the shelf label.

So for example if a code reads '250126', the date the offer ends will be January 26, 2025.

The "secret codes" in Sainsbury's can be found on shelf labels for Nectar Prices.

The date the promotion started will be in small print on the label.

Which? explains: "(This) gives a clue to how long it will be valid for - offers usually run for a fortnight and end on Tuesdays."

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While Waitrose are a bit more upfront with their "secret codes" displaying the day and month a promotion is going to end.

Offering further money saving advice, Which? added: "Even if an offer is ending soon, our research has found that a lot of products regularly go back on offer again and again.

"So it's best to only buy the item if you were already planning to do so."