 Loot boxes, purchased in video games for randomized rewards, are similar to gambling and require disclosure of probabilities to prevent overspending. While this measure has been adopted as law in China, self-regulation by the gaming industry conflicts with commercial interests and may not fully promote public welfare. The prevalence rate of loot boxes among UK's top iPhone games was 77% in mid-2021, but only 64% complied with probability disclosure industry self-regulation, significantly lower than PRC legal regulation. UK games made insufficiently prominent and difficult to access disclosures both in-game and on their official websites. Only one of 75 UK games adopted the most prominent disclosure format. Policymakers should demand more accountable forms of industry self-regulation or impose direct legal regulation to ensure consumer protection. This article was authored by Leon Y. Chow, Laura L. Henderson, and Philip W. S. Newell. We are article.tv, links in the description below.