According to an official announcement from the UK Financial Conduct Authority (FCA), the FCA has selected four companies to enter its regulatory sandbox to test innovative stablecoin services in a real-world environment with robust security measures. The four selected companies are Monee Financial Technologies, ReStabilise, Revolut, and VVTX, which emerged from 20 applications. Testing will begin in the first quarter of 2026, focusing on application scenarios such as stablecoin issuance, payments, wholesale settlements, and crypto trading. Matthew Long, FCA's Director of Payments and Digital Assets, stated that this initiative aims to ensure the credibility of stablecoins in payments and settlements, and the test results will directly impact the final UK stablecoin regulatory rules to be released later in 2026.