I'll watch with interest over the next couple of days, if things keep trending downwards I'll be pulling every penny from my S&S ISA for now.
Why?
You can turn it to cash, earning 5% or whatever as interest, or shove it in a Money Market fund at building society rates(CGT), or trade with it, where it is. You don't earn more outside the ISA, and you can only put back whatyou take out.
You can grow it there as much as you like, though Rachel may be putting limits on that.
One time I looked there were only a few people in the country with more than £1m in an ISA, but it's not such an exclusive club to be in now, I'm sure.
I most actively trade in one at Trading212 buthe range of funds lis limited.
AJ Bell is my favourite - small fees, good screener, easy to switch funds. Quicker and cheaper than ii. Standing fees are higher than ii but transaction are less. Invest Engine and Fidelty are worth considering if you're looking. Hargreaves L is easy to use but costs more and they're silly about selling part of a fund - it stops you selling the rest, for several days.
HSBC is horrible. I sold a lump last week, and it still shows it as owned, and with a reducing value every day, so you can't look at the balance, ever,