The Welsh Cabinet Secretary for Health and Social Care, Jeremy Miles MS, has suspended the publication of referral to treatment (RTT) waiting time data for Betsi Cadwaladr University Health Board, pending an external review into data quality and governance concerns. The suspension follows issues identified in the board’s recent RTT data submissions, including anomalies in reported waiting list figures and inconsistencies with operational activity levels. The review will be conducted by experts from Digital Health and Care Wales, NHS Wales Performance and Improvement, the Welsh Government’s Chief Statistician’s team and a peer expert from another Welsh health board. It will focus solely on planned care data, excluding cancer, diagnostics, therapies and urgent care data, and will examine data collection, quality assurance and reporting processes, providing recommendations to strengthen governance and assurance arrangements. During the suspension period, national RTT statistics will continue to be published, but data from Betsi Cadwaladr University Health Board will be omitted. The Office for Statistics Regulation has been informed of the decision.