The Better Biscuits initiative has been running across eight Nisa stores for eight weeks throughout July and August.
Claire Parker, Nisa’s marketing manager for category growth wholesale, said: “Biscuits is an important category in convenience with the largest penetration across all snacking categories and bought by 99% of households.
“It also has the highest frequency within snacking, bought almost 10% more often than chocolate, confectionery and crisps.”
The trial saw new planograms alongside refreshed ranges of biscuits.
Parker added: “The team at Pladis is incredibly knowledgeable and a joy to work with.
“They have taken time to really understand our business and worked closely with us to ensure that our Co-op branded offering is correctly represented within the category and that any local lines which are important to an individual store are included in the planograms.”
Among the brands owned by Pladis Global is McVitie’s, which was acquired when Pladis bought United Biscuits in 2014.