The United Kingdom ranked third in JAN3’s 2025 B20 nation-state Bitcoin adoption index with a 6.44 score and a BB rating, trailing the United States at 7.42 and Bhutan at 6.64. JAN3 said the result reflected its broader framework, which weighs factors including national Bitcoin holdings, state mining, legal and tax treatment, strategic-reserve policy, pro-Bitcoin political leadership, and how widely Bitcoin can be used in the economy. A key input was roughly 61,000 BTC in government custody from law-enforcement seizures, but UK records classify those coins as alleged criminal property subject to court proceedings rather than a sovereign Bitcoin reserve. That distinction matters because the Treasury said in a March 2, 2026 parliamentary answer that neither it nor central government held cryptoassets at that time, and a September 2025 answer said there were no plans to change seized-asset or official-reserve frameworks or review Bitcoin as a reserve asset. The UK’s position was also supported by legal and market-access developments, including the Property (Digital Assets etc) Act, which took effect on Dec. 2, 2025 and clarified that certain digital or electronic things can be treated as personal property, and the Financial Conduct Authority decision to allow retail access to qualifying crypto exchange-traded notes on approved UK exchanges from Oct. 8, 2025 under promotion and consumer-protection rules. The government has said its wider crypto regulatory regime will begin in 2027.