Every UK holder now has a data shadow: a growing file of exchange, wallet and identity information that HMRC will receive automatically under the Cryptoasset Reporting Framework. Most people have no idea how large that file is, what is in it, or how far back it reaches.

This talk explains what is actually being collected, who has to report it, what HMRC does with it once it lands, and the very short window holders have to put their position right on their own terms rather than HMRC's. It covers what nudge letters and discovery assessments look like in practice, where self-custody sits, and why "I only ever bought" is not the safe position most people assume it is.