Shell-shocked! Shoppers swapping out cheap eggs for pricey ones in sneaky supermarket eggschange

The clip was shared by frustrated customer Anita Wong, who claims she unknowingly fell victim to the trick after buying two boxes of Clarence Court Burford Buff Eggs from Waitrose. The premium eggs sell for £3.35 for a box of six.

However, when Ms Wong got home she realised the box was full of what appeared to be regular eggs.

She noticed the difference after realising there was no Clarence Court crown logo, normally stamped on the side of Burford Buff eggs.

Ms Wong returned to the store to report the issue, where a sales assistant figured out the mixup and explained this type of tampering has become an increasingly common problem.

She explained in her Instagram video: "This is what's happening in a lot of supermarkets at the moment.

"The more expensive eggs, people are actually decanting those into the less expensive egg boxes and buying them so the people who are buying the more expensive eggs and unwilling buying the less expensive eggs."

A Clarence Court Spokesperson, said, “We are aware of reports that some customers have had their Clarence Court egg cartons tampered with and refilled with eggs that are not ours. As cartons are not sealed, to allow checks for cracked eggs, eggs can occasionally be moved between packs in store, which is beyond our control.

"While we are, in some respects, flattered that some will go to such lengths to get their hands on Clarence Court eggs, we would urge those responsible to be more respectful.

"Respectful of our incredible farmers, who ensure the exceptional welfare standards given to our hens; and of the hens themselves, whose pedigree and patience result in such fabulous eggs for our loyal customers to enjoy. We’re grateful to customers for raising these concerns and remain fully committed to protecting the quality, provenance and integrity of Clarence Court eggs.”