M&S slashes price of kitchen essential perfect for packed lunches for kids to £1.00 from £12.50

Rather than searching for the yellow labels though, one retail worker has shared a way to guarantee discounts on fruit and veg at one of the UK's poshest supermarkets.

Having worked as a night assistant at M&S, they revealed that the posh supermarket has a secret code which they use when making reductions.

For those looking to bag a bargain, you’ll need to find the pre-packaged produce as this is where you'll find the biggest savings - according to the insider.

Next, you’ll need to look for ‘J Codes’ - which are a seven digit code that starts with the letter ‘J’.

The insider stated that these can usually be found on the packet where you’d find a best before date.

Whilst it may look like a random string of numbers to the untrained eye, the M&S worker explained that this code is actually a sell by date.

In a post on Wednesday (Jan 31), they wrote: “J Codes are 7 digit codes that you will find on pre-packed fruit and veg (and some loose)… The digits that follow are just a date."

Savvy shoppers can then use this code to work out when produce will be reduced, as he explained.

He added: "So any J code fruit or veg that you find yellow stickered tomorrow morning will say J310124.”

Continuing, the insider told the group: “When it comes to meat, or dairy, or ready meals or anything like that, we reduce the next day's date (i.e., tonight we will reduce anything with 1st Feb on it) but in fruit and veg, we will be looking for anything 31st Jan.”

Not only can this help you find those highly sort after yellow labels, shoppers could even find items that haven't been reduced and ask for a discount.

 Cheerfully, the M&S worker added: “A little peek behind the curtain, but now you will also know if you find something on the shelf that should be reduced but isn't!"

“It's a rough one out there, gotta make those pennies count however we can!”