UK physics funding cuts have triggered a backlash from university leaders and scientific groups after the Science and Technology Facilities Council said it must make major savings that would hit particle physics, astronomy and nuclear physics. Critics say the proposed reductions could damage active research, weaken early-career support and undermine the UK’s position in major international science programmes.
The funding pressure comes from within the council’s existing budget. STFC, which sits inside UK Research and Innovation, has said inflation, higher energy bills and unfavorable foreign exchange movements have added more than £50 million a year to its costs. It has also said it needs to reduce spending from its core budget by at least 30 percent compared with 2024-25 levels while cutting the number of projects backed through its infrastructure fund.
Different reports have described the scale of the planned retrenchment in slightly different ways. Times Higher Education said STFC is seeking to reduce its budget by £162 million by 2029-30, with investments in particle physics, astronomy and nuclear physics likely to fall to 70 percent of what they were in 2023-24. Payload reported the same £162 million savings target but said future STFC spending would likely be around 70 percent of 2024-25 levels.
Open letter raises pressure
Concern across the research community has grown since a group of UK physics department heads published an open letter to science minister Patrick Vallance. The letter says the changes create reputational risk and calls for strategic clarity and stability so that UK physics can continue to thrive.
Physics World reported that 58 signatories from 45 universities had backed the letter, including leaders from Birmingham, Bristol, Cambridge, Durham, Imperial College, Liverpool, Manchester and Oxford. The signatories argued that the UK’s international standing in physics is a strategic asset and said areas such as particle physics, astronomy and nuclear physics are especially important.
The letter also warned that abrupt pauses in funding for major international science programmes could hurt the UK’s competitive position well into the 2040s. It called on the government to work with UKRI and STFC to stabilize curiosity-driven physics grants at a minimum of flat funding in real terms and to protect postdoctoral researchers, students and technicians.
Projects already in the firing line
The planned cuts are not just theoretical. Physics World reported that STFC has already said two UK national facilities, the Relativistic Ultrafast Electron Diffraction and Imaging facility and the mass spectrometry centre C-MASS, will no longer be prioritized.
The same report said two international particle physics projects will also lose support: a UK-led upgrade to the LHCb experiment at CERN and a contribution to the Electron-Ion Collider being built at Brookhaven National Laboratory. Those decisions have sharpened fears that the UK will keep paying into major science infrastructure while losing the funding needed for researchers to make full use of it.
That concern has been echoed in astronomy. Robert Massey of the Royal Astronomical Society told Space.com that the UK may continue investing in major collaborations such as the Square Kilometre Array Observatory and the European Southern Observatory, but without enough support to exploit the data those facilities will produce. The UK hosts the SKAO headquarters and is one of the three largest contributors to its budget, while also being one of the main funders of ESO.
Warnings over jobs and skills
Much of the strongest criticism has focused on the likely effect on people rather than equipment alone. Massey said early-career researchers, especially PhD graduates and postdoctoral scientists, are likely to bear the brunt of the cuts.
Mike Lockwood, president of the Royal Astronomical Society, described the proposed reductions as the most drastic cut in support in a generation. Paul Howarth, president-elect of the Institute of Physics, said the reductions would be a devastating blow to UK physics, which is already dealing with a funding gap in universities, a long-running shortage of teachers and wider skills shortages.
Sector groups have also challenged the logic behind the change. Alicia Greated, executive director of the Campaign for Science and Engineering, said it was hard to reconcile promises that curiosity-led research would be protected with requests for researchers to model cuts of up to 60 percent to active budgets.
UKRI defends broader strategy
STFC’s January 28 letter to project leaders asked research heads to show how projects would respond to flat cash as well as 20 percent, 40 percent and 60 percent reductions, and to identify the point at which projects would no longer be viable. The council said these hard choices are part of a broader shift toward a more cross-disciplinary, programmatic and outcomes-focused model.
UKRI has defended the wider funding picture. In a February 1 letter, chief executive Ian Chapman said total funding available for universities, researchers and innovators had risen to almost £10 billion in the latest government budget, up from around £9 billion previously, but added that UKRI had been told to focus and do fewer things better while aligning more clearly with national and societal priorities.
A UKRI spokesperson told Times Higher Education that curiosity-driven research would still account for around half of its funding. At the same time, the spokesperson said STFC faces particular cost pressures and must find savings from within its allocation, leaving the research community waiting to see how far those savings will reshape one of the UK’s most internationally visible scientific strengths.
