Morningstar is a very good source of information, with lots of data for fundamental analysis on Funds, Trusts, ETFs, Stocks. Besides some interesting articles and documentation (KIID/KID, prospectus, etc).
The paid version Morningstar have extra data and also have other useful tools for asset/portfolio management.
Integrating Morningstar in Trading 212 could be a good addition to investors and Trading 212.