HMRC recorded 240 people who each declared more than £1 million in cryptoasset gains during the 2024 to 2025 tax year. The group reported £717 million in gains, which represented just over half of all crypto gains declared to HMRC. A total of 17,600 people reported cryptoasset disposals liable for Capital Gains Tax. HMRC will begin receiving additional exchange data under new reporting rules from 2027.