According to the source, the UK government has issued guidance requiring crypto exchanges to collect detailed transactional information from UK customers effective January 1, 2026 to strengthen tax compliance; source: HM Revenue & Customs. The measure aligns with the OECD Crypto-Asset Reporting Framework and signals tighter data collection and reporting standards that UK-facing venues and traders should plan for across onboarding and fund movement workflows ahead of the 2026 start date; source: OECD and HM Treasury.