Hello, first post from a foolish investor. I'm a young and very casual investor - I've put money into my Hargreaves Lansdown ISA for a number of years - and the funds I've invested in are doing quite well. Was looking at putting money into an ETF as I've read they're quite good value (low AER). However, HL charge 0.5%pa to have ETFs in their ISA (max £45pa). What's the most cost effective way to invest into ETFs? From a tax point of view, is it a good idea to use my ISA allowance for ETFs?

Thanks