The Commercial Court has found Dunnes Stores led a misleading in-store advertising campaign by using phrases like 'Always Better Value'.

The food chain was brought to court by the discount supermarket giant Aldi.

Tomato ketchup, pork sausages, shower gel and toilet paper – all items you might buy in the weekly shop.

In store supermarket banners tell you there is a “Lower price guarantee” and as you go down the aisles you might see a label on the shelf by a product with the words 'Aldi match'– a reference to the German discount store.

But is the customer being misled?

Aldi took Dunnes Stores to court over just such an instore advertising campaign in 2013 –- they said the Irish food chain was not making like for like comparisons about the quality and quantity of the products in question.

They've won their case - Mr Justice Brian Cregan has found that Dunnes Stores comparative advertisements included false information that were likely to confuse, mislead and deceive the average consumer.

He'll decide what steps to take next later this month.