The agreement will see Graham’s popular Strawberry Protein 25 pouches stocked in multipack form across Costco’s UK, Iceland, and Swedish stores. This marks the first time the product will be available in multipacks, with eight-pouch boxes catering to the growing demand for bulk buying.

There has been a huge surge in demand for the Scottish dairy’s natural and high-protein products, which are now exported globally to the likes of UAE and Ireland. The popular range overtook sales of conventional milk in major supermarkets last year, with protein product sales now equating to over 25 per cent of the family business’ total sales.

Robert Graham, managing director at Graham’s Family Dairy, said: “It’s a proud moment for us all to see what began as a wee family dairy in Bridge of Allan now stocked across the country and even further afield, in one of the world’s most respected retailers.

“It’s no surprise to see continued demand in our high protein range. By balancing innovation with our traditional style, we’ve been able to create a natural high-protein product that gives people an easy, nutritious way to meet their protein needs.

“It’s also been important for us to expand our pack offering, with the new multipack allowing Costco shoppers to buy their protein pouches in bulk. We’re delighted that our Protein 25 range will help fuel Costco customers in the UK and Scandinavia.”

With the protein pouches in selected stores from the end of October onwards, it marks the latest of a string of successes for the Bridge of Allan business.

It has recently released its accounts for the year ending March 2024, showing a £153.1 million turnover with the independent dairy putting part of that success largely down to investment in new products, including the dairy’s high-protein range featuring Protein 25 pouches, yogurt pots and drinks, dessert-style protein yogurts, Skyr Icelandic-style yogurts, and Scotland’s first Greek yogurt pouch, the latest innovation from the family business.

The pouches will be available at all 29 of Costco’s UK locations.

Luke Ferguson, buyer at Costco, said: “We are delighted to step into the Protein Category with Grahams Family Dairy as our partners. We are confident the quality of the product and value to market will be well received by our members.”