Exactly the answer I needed! Thank you so much TreeofLife for your help!

As a Swiss citizen I usually assume that I am not eligible for the funding schemes restricted to "UK/EU nationals". On day I still double-checked with one of them (Oxford Brookes University, in a wild hope), and have been confirmed that students from Switzerland were not eligible.

Now, for my future applications, do you think that Swiss nationals are in all cases never eligible for UK/EU funds, as a national policy?

Or do you think these policies are rather university- / funds-specific, and that it would be worth it to check individually for each PhD position I am interested in?