Any FIC is almost certainly going to be treated as a “close company” (unless the ownership was VERY distributed, maybe). The usual concern about that label is where you have an actual proper “trading company” (trading in the sense of “doing something useful”) which starts to do some investing on the side… and then finds itself subject to the close company classification (and so cut off from various reliefs and lower rates), which is why sites like Foxy always recommend setting up a separate company/SPV to do the investing, unless the company is done with the trading side. But anyone setting up an FIC should be expecting it to be a “close company” from the start; I’m not sure why it seems to be regarded as such a terrifying thing… IIRC the issues are mainly that you don’t get to use things like EIS or BPR reliefs or lower “small profits” corporation tax rates (arguably it’s actually a simpler tax regime, because all that sort of fine detail isn’t available).