Starting from April 2027, under65s will only be able to put £12,000 a year into a Cash ISA instead of £20,000, with the remaining £8,000 of the overall £20,000 ISA allowance meant to nudge people toward Stocks & Shares ISAs. I think the UK has one of the lowest retail investment rates in the G7. Will this actually change behaviour, or just annoy risk averse savers?