"The PSR found  Mastercard and Visa increased their core scheme and processing fees to acquirers by at least 25% since 2017, costing businesses at least £170million extra per year. This increased cost impacts UK businesses’ ability to invest and grow, and could lead to direct economic constraints, particularly for small merchants. A lack of easy-to-understand fee information has led to costs for acquirers and merchants, including small retailers. The PSR will be publishing the final report and a paper that seek views on remedies identified in the final report."