Thanks for all the explanations. Why I don’t understand though is - surely the university is paying overheads on my research costs anyway? So my getting a grant that pays something towards my expenses but not much towards our overheads isn’t actually costing the university any extra money? mean, I’m employed on a teaching and research contract with the expectation I spend nearly half my time doing research. So the lights, heating, security, maintenance staff etc all still need to be kept on!
Have you not been listening to professional conversations over the last decade? If I were your HoD or DoR, I'd find this quite professionally irresponsible, frankly.
Teaching income from fees no longer covers the costs of universities' delivery of undergrad teaching, including funding academics on teaching & research contracts. So no, your overheads are not covered.
QR money drawn from a university's performance in REF covers some of the costs of staff doing research. But increasingly, universities are looking at "unfunded" research with narrowed eyes. Even though QR funding is supposed to cover our research time.
I don't like this, but it's the reality, and in my opinion, it is collegial & professional to understand this, and try to do something about it.
In the sciences, most academics have to get external funding to run their labs & do their research. In the humanities (where I am) those of us who get big grants also do the same things as our colleagues, and basically subsidise those who don't get grants.