An M&S shopper shares the secret to getting free Percy Pigs every month

Percy Pigs are one of M&S most popular and iconic food items that have people all over the country raving about how delicious they are.

But now you can get a free bag every month using a simple trick shared by a mum who regularly shops at M&S.

She said that those shopping on the circuit you can get a for free bag if they participate in the brand’s sustainability scheme.

M&S shoppers can get Percy the Pig and Colin the Caterpillar free candy by donating old clothes

Customers simply need to drop off their favorite clothes at the store MADAM Scan the QR code and check out their Sparks app.

A free bag will then be offered to those who take part Percy Pig or Colleen the Caterpillar candy to thank them for their efforts.

Of the scheme, M&S said: “Every time you put your favorite clothes in one of our Shwop boxes, they are resold, reused or recycled, so absolutely nothing is wasted.”

The best part about it a trick is that shoppers do not need to buy clothing items purchased from M&S with clothing and other items in any store.

In addition to this, when you pop into an Oxfam store and donate an item of clothing to M&S, you’ll be rewarded with a £5 Clothes and Home voucher to use in store.

The tip was shared on Instagram by the popular savings account @thismumsavesmoney.

In their post, they told followers: “Finally made it into town and didn’t forget to take my sorted unwanted clothes with me in exchange for a free Percy the Pig bag with the M&S Shwop offer.

You can do it once every 30 days!”

Fans of the account praised the tip, with one user reminding customers: “Don’t forget you can get large 4lb bags.”

At the same time, another willingly adds: “I’ll take my wardrobe there now.”