I’m in the arts and humanities as opposed to STEM, but the funding is pretty similar. There are various schemes funded by the specific research councils, under the umbrella of UKRI (UK Research and Impact council). These studentships are limited to UK students generally. Overseas students are funded through a variety of schemes - Commonwealth Scholarships, for example, or by individual research projects, funded by the EU, via Horizon Europe/ERC, for example (not an exhaustive list). Some universities also set aside funding - at my place, we have a Global studentship scheme for applicants from African countries and the Indian sub-continent. Richer universities will have more, as will research-led places.
Other countries will fund their best and brightest to study overseas, and we’re lucky that the UK is very much seen as an important place to study.
i am constantly hugely impressed by the sacrifice, dedication, and hard work of my international PhD students. I know what family resource, as well as government support, goes into their study with us. It’s why I think the current attitudes of government and a minority of UK citizens are deeply wrong and misguided in the “clampdown” on foreign students. They are a net gain to the UK, and contribute knowledge and labour. Their studies here are a significant contribution to UK soft power globally.
They value something that the UK ethos at the moment does not: high quality curiosity driven research - “blue skies” thinking. It seems to me that’s why China sends so many students abroad - they want to learn how we do this sort of research.
The UK has an extraordinary opportunity to attract some of America’s best science researchers, labs, and teams, who are having funding withdrawn under the current US regime. But the attitude here is that universities are a drain, a cost, and “cost too much” so we’re going to lose an amazing opportunity. US science researchers looking to relocate are apparently going to Germany.
UK science research punches way above its weight, in terms of funding, endowment and numbers. We are second to the US but, I fear, not for very much longer. Sadly.