For the last few years the ISA and SIPP charges comparisons have covered the same group of brokers. Times are changing. The latest table that I’ve found has banks, robo-advisers and more. One or two new entrants’ DIY investment charges look quite reasonable. https://www.moneyobserver.com/our-analysis/which-isa-platform-should-you-pick-we-compare-different-brokers
Making Sense of My Personal Finance