The Milk Suppliers Association (MSA) is a Co-operative made up of 131 dairy farmers based throughout South West Scotland that supply approximately 210 million litres of milk per annum to a creamery in Stranraer owned by Lactalis. Lactalis is a leading global dairy business and the largest European milk processor. The creamery at Stranraer produces a range of cheddar cheeses under the brands Seriously Strong, Galloway and McLelland. Cheese is also supplied to retailers for their individual own label brands.