Research Excellence Framework: Four Decades of UK Research Assessment

The Research Excellence Framework (REF) is the UK’s current system for assessing university research quality, but it is the third generation of a lineage that began with the 1986 Research Assessment Exercise (RAE); understanding that lineage — RAE (1986–2008), REF 2014, REF 2021 and now REF 2029 — explains why today’s exercise looks the way it does. Each cycle inherited a structure from its predecessor while correcting for that predecessor’s criticised weaknesses.

The Research Excellence Framework is the UK-wide, peer-review-based system that four national funding bodies use to grade research quality in higher education institutions and to allocate roughly £2 billion a year in Quality-Related (QR) block-grant funding. It replaced the RAE in 2014 and has since run in 2021, with the next cycle — REF 2029 — assessing submissions made in autumn 2028 and publishing results in December 2029.

• What was the Research Assessment Exercise (1986–2008)?
• How did the RAE become the REF in 2014?
• How have REF 2014, REF 2021 and REF 2029 differed?
• Common questions about the Research Excellence Framework
• What does this history mean for research administrators?

What was the Research Assessment Exercise (1986–2008)?

The Research Assessment Exercise was the REF’s direct predecessor, run roughly every five to seven years between 1986 and 2008 to allocate government research funding by quality rather than by student numbers alone. Early RAE rounds (1996 and 2001) graded each submission on a single numeric scale running from 1 up to 5* — a shorthand that condensed an entire department’s output into one number.

That single-grade approach drew sustained criticism for masking variation within a department, so RAE 2008 replaced it with a quality profile: each submission was scored as a percentage distribution across four descriptive bands — 4*, 3*, 2*, 1* and unclassified — rather than one composite figure. This is the star-profile structure that REF then inherited unchanged in 2014 and still uses today; the 4*-to-unclassified scale did not originate with the REF, it originated with the final RAE round.

RAE 2008 also assessed research purely on outputs — publications, patents, performances and similar outputs — with no formal assessment of what that research achieved beyond academia. That omission became the specific target of the reform that followed.

How did the RAE become the REF in 2014?

The Higher Education Funding Council for England (HEFCE) set the transition in motion with a June 2007 circular letter announcing that a new framework would replace the RAE after the 2008 round. HEFCE’s stated aims were to produce UK-wide indicators of research excellence benchmarked internationally, reduce the administrative burden of the RAE, and avoid incentivising poor academic behaviour.

A consultation ran through September–December 2009 with responses from bodies including Universities UK and the University and College Union. Following the May 2010 general election, incoming universities minister David Willetts delayed the exercise by a year specifically to test the efficacy of a proposed new “impact” measure before it was locked into methodology — a pause that pushed the first REF from an originally planned 2013 assessment to 2014.

REF 2014 duly introduced impact as a formally weighted, separately assessed element for the first time — defined as an effect on the economy, society, culture, public policy, services, health, the environment or quality of life beyond academia. Universities submitted impact case studies alongside outputs and an environment statement, assessed by expert panels across the same broad subject-based Units of Assessment structure the RAE had used.

How have REF 2014, REF 2021 and REF 2029 differed?

Each REF cycle has kept the same three-part architecture — outputs, impact, environment — while shifting the weighting and scope in response to review findings. Lord Nicholas Stern’s July 2016 independent review, commissioned to shape REF 2021, recommended requiring all research-active staff to be returned (closing the ability to selectively submit only top performers) and broadening impact case studies to reflect interdisciplinary work more fairly.

A provenance detail worth noting: UKRI’s own June 2023 announcement of preparatory decisions was titled “Early decisions made for REF 2028” — the exercise was originally planned around a 2028 results year before the timetable was subsequently confirmed as submissions in autumn 2028 with results in December 2029, a full year later than that initial working title implied.

REF 2029’s headline structural change is moving environment assessment beyond a purely unit-level statement to cover institutional strategy as well, intended to give more credit for how universities support research culture — a direct response to long-running criticism, echoed in a January 2026 Higher Education Policy Institute commentary, that REF’s output-count incentives had favoured high-visibility “sumo wrestler” research leadership over the steady, cumulative contributions of specialist staff.

Common questions about the Research Excellence Framework

What is the purpose of the REF?

The REF’s purpose is threefold: it informs the allocation of block-grant research funding to institutions based on quality, provides public accountability for that investment, and produces UK-wide benchmarking evidence on the health of research across disciplines. All four UK funding bodies use REF outcomes for this purpose.

What is the 3* and 4* rating as defined by the Research Excellence Framework?

Under REF’s grading criteria, four-star work is “world-leading” in originality, significance and rigour; three-star is “internationally excellent” but short of world-leading standard. Two-star and one-star denote internationally and nationally recognised quality respectively, with unclassified work falling below nationally recognised standard.

What is the Research Excellence Framework in the UK?

In the UK, the Research Excellence Framework is the joint system operated by Research England, the Scottish Funding Council, Medr (Wales) and the Department for the Economy (Northern Ireland) to assess research quality across all disciplines and all four nations, informing roughly £2 billion in annual QR funding.

What is the meaning of research excellence?

Within REF’s own framework, “research excellence” means originality, significance and rigour in a piece of work, judged relative to international standards by expert peer-review panels. It is a comparative, panel-assessed judgement rather than a fixed metric, distinguishing it from citation-based or bibliometric excellence measures.

What does this history mean for research administrators?

The RAE-to-REF lineage matters practically, not just historically. Institutions preparing REF 2029 submissions inherit reporting infrastructure, Unit of Assessment definitions and a star-profile grading logic that trace back through three prior redesigns, so REF 2029 guidance should be read as an incremental revision of a 40-year-old accountability instrument rather than a standalone exercise.

• The three-part outputs/impact/environment structure has proven durable since 2014 and is retained, with rebalanced weighting, in REF 2029.
• The 4*-to-unclassified grading scale predates the REF entirely, originating in RAE 2008 — a detail that matters when comparing scores across cycles.
• Each redesign followed a formal independent review (the 2010 impact pause, the 2016 Stern Review, and REF 2029’s early-decisions process), so institutional research offices should expect the pattern of post-cycle reform to continue.

For research administration teams building multi-year REF strategies, the practical lesson from four decades of reform is that structural continuity — the panels, the Units of Assessment, the star scale — has consistently mattered more than headline rebranding. REF 2029’s institutional-level environment assessment is best read as the latest iteration of that pattern, not a rupture from it.