I've been trading my own money now for 6 full tax years. The percentage of my 'income' that was trading income has varied between 0% and over 95%. In all of those years my trading profits have been taxed as CGT (basically that is what I have put in my SA, and that is what HMRC has used for the calculation).
As for offsetting / carrying forward losses, sorry I don't know for sure. I've never tried it under the CGT regime (not sure if it's possible with CGT), I just sell shares to make sure I always use the entire CGT limit even if I've made a loss on my futures trading (obviously if I've made a profit, then I try and crystallise losses in my long only portfolio to reduce the CGT gain).
"Windlesham1, post: 5234000, member: 410634"]I shall be carrying forward losses as I pay income tax as an options trader. I have had a couple of losing years in the past and this only offsets the next tax year. Wondering if I can claim CGT allowance on shares, though