Another platform to consider maybe Trustnet Direct as the website is so good for info, I think they may be linked to Interactive Investor. Quite a few brokers/platforms are linked these days. Cavendish use FundsNetwork which is Fidelity but are like a 3rd party broker with charges, i don’t know how RDR has affected this.
I have some FTSE 250 stocks. The only income fund I have at the moment is Trojan Income, I might get some of Invesco Perpetual High Income or some of Neil Woodfords new fund when the markets settle a bit.