After a trade is confirmed, the charts become temporarily all messed up: the portfolio is artifically up by the amount sold or down by the amount bought, before correcting itself. The effects of FX (from GBP to USD) result in your new position immediately down by ~0.5-1.0%. Trade history should also show the USD price paid, not only the GBP equivalent. An established competing service enables you to see it all, including their small fees (£1-£2). It’s a constant guessing game. The “insights” section is not useful, is you are invested in stocks (it’s a chart showing you’re in 100% stocks.)
Overall, UX needs work.
Trade execution on the the new platform is awesome.