Yes. Missing this as well. CMC annual tax statement shows capital gain/loss for each SELL trade.
Wondering if this can be created using the trade history. Probably possible with a lot of Excel work.
Get complicated if BUYs were averaged up/down, SELLs did not contain full holdings to do this correctly.
(i.e. FirstIn , FirstOut principle to be applied etc.)
Maybe a fellow trader did the work already, based on what can be downloaded from IG?