As with any activity, the question whether cryptoasset activities amount to trading depends on a number of factors and the individual circumstances. Whether an individual is engaged in a financial trade through the activity of buying and selling cryptoassets will ultimately be a question of fact. It’s often the case that individuals and companies entering into transactions consisting of buying and selling cryptoassets will describe them as ‘trades’. However, the use of the term ‘trade’ in this context is not sufficient to be regarded as a financial trade for tax purposes.
A trade in cryptoassets would be similar in nature to a trade in shares, securities and other financial products. Therefore the approach to be taken in determining whether a trade is being conducted or not would also be similar, and guidance can be drawn from the existing case law on trading in shares and securities.
Lots of other stuff in there about airdrops and forks
https://www.gov.uk/government/publications/tax-on-cryptoassets/cryptoassets-for-individuals
Thanks Hairy, well spotted - this is the first new stuff they've posted since 2014 (when they were vague and talked about it possibly being seen as 'gambling')
Now, how to put all the data together when a lot of the exchanges from way back are long gone; BTCE, Cryptsy, Gox et al.
I will need to face up to my dirty little Alt flirtations over the years, of which I am sure I will find contain many embarrassing sojourns I had totally forgotten.
They're going to tax the profits but not credit any losses!