How to Self-Manage Multi-Asset Investments

You need a platform that can cope with whatever you're proposing. Not every platform offers access to every single type of investment. There's got to be some kind of protection and some way of tracking how the investment does. If this thing does well, you're certainly going to need to track book costs for capital gains tax reporting down the line. And you need to be able to claim tax relief if it's an EIS-able investment.