HMRC figures show some 17,600 individuals paid capital gains from crypto investments in the past year, worth £1.38bn. Around 240 investors gained more than a £1m and accounted for £717m in tax. The data also revealed that 87% of these investors were male, with over half aged 25-44. Phil Kinzett-Evans, partner at UHY Hacker Young, said the gains were "remarkable" but added: "HMRC suspects that there are a lot of undeclared gains still out there. It is stepping up its investigations into cryptocurrency investors over suspected tax evasion."