CASE HUB ARCHIVED—this archived case hub reflects the position at the date of the decision of 18 January 2022; it is no longer maintained. See further, timeline and commentary. Case facts Outline Payment Systems Regulator (PSR) Chapter I investigation into infringements of competition law by five undertakings (Mastercard, allpay, APS, PFS and Sulion) for agreeing not to compete or poach each other’s clients. Latest development On 18 January 2022, the PSR issued its infringement decision finding that five parties infringed competition law by agreeing not to compete or poach each other’s customers in the prepaid cards market in Great Britain. The PSR imposed fines totalling £33,261,352. Total fines imposed on each party were as follows:• Mastercard—£31,560,062 (including a 20% reduction for settling)• PFS—£916,746 (including a reduction for leniency and a 20% reduction for settling)• allpay—£28,553 (including a 20% reduction for settling)• APS—£755,419 (including a 10% reduction for settling)• Sullion—£572 (including a 20% reduction for settling, as well as a reduction to ensure that it did not exceed 10% of its worldwide turnover) Parties •