St Mary's University, Twickenham sustainability score: 48/100
Better than 18% of Higher Education / Universities
Leading practice starts at 60. The highest score on SINK is 71.
Limited independent evidence: only two independent sources cover this company. The score may change as more evidence appears.
St Mary's University, Twickenham is a small Catholic research-led institution in London. It educates students across theology, business, sport, and social sciences.
More about St Mary's University, Twickenham
The campus occupies the 35-acre grounds of Strawberry Hill House in the London Borough of Richmond upon Thames.
Head office GBStaff 645 FTE (HESA EMR 2023/24)Revenue £58.8M (HESA EMR 2023/24)Website ↗
St Mary's has cut operational emissions 52% since 2005 and recycles 97.9% of waste—genuinely strong numbers for a small campus university. But renewable energy sourcing is absent entirely, Scope 3 reporting has lapsed, and science-based targets are missing. The university acts where it counts operationally but lacks the supply chain rigour and ambition required for a higher band.
St Mary's University, Twickenham scores 48/100 (Making progress) on SINK's independent climate assessment, scored from public data only. Scores are free. Nobody can pay to change a score, speed it up or hide it. Last verified September 2026.
That places St Mary's University, Twickenham joint 211th of 1,023 companies scored, and joint 53rd of 67 in Higher Education / Universities.
What is St Mary's University, Twickenham doing well, and where does it fall short?
Strongest on Controversies & Red Flags and Carbon Footprint: Operations (8/10, 6/10). Weakest on Energy Source and Nature & Biodiversity Impact (2/10, 3/10).
Where St Mary's University, Twickenham lost points
For each question that lost points, the evidence our public rubric looks for that we didn't find.
What would raise this score
- How clean its energy isMove to a renewable energy tariff or make a major efficiency investment.
- Its effect on natureAssess its effect on nature and publish a basic environmental policy.
- Its effect on waterMeasure its water footprint and set reduction targets.
Every question that lost points
- Emissions from its own operations6/10Its own emissions aren't independently verified or tracked over several years.
- Emissions from its supply chain5/10Most of its supply-chain (Scope 3) emissions aren't measured.
- Whether its emissions are falling6/10No consistent fall over several years across its operations and supply chain.
- How clean its energy is2/10No renewable energy tariff or major efficiency investment shown.
- Its effect on nature3/10No assessment of its effect on nature, and no basic environmental policy.
- How it uses materials and handles waste6/10No verified figures for reuse and recycling across the business.
- Its effect on water4/10No measured water footprint with reduction targets.
- Its climate targets4/10Its targets aren't science-based or committed to the Science Based Targets initiative.
- How openly it reports5/10No dedicated sustainability role, board oversight or public report.
A score changes when the evidence does. We use new published evidence at the next rescore. Anyone can send us new evidence, free. How to send it.
How is St Mary's University, Twickenham's SINK score calculated?
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × ScaleWhat evidence is St Mary's University, Twickenham's score based on?
10 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
50% of them were published by St Mary's University, Twickenham itself; the rest come from independent sources.
“Total scope 1 and 2 carbon emissions 2023/24, UKPRN 10007843: 1,846 tCO2e”
“adopted the widely accepted approach defined in the GHG Protocol Corporate Standard”
“We have been recording carbon emissions since 2005. This has primarily focused on scope 1 (gas and company vehicles), scope 2 (purchased”
“140 HE providers submitted Scope 1 and 2 carbon emissions data to HESA through the Estates management record for the year 2023/24”
“Academic years 2015/16 to 2023/24 — Scope 1 and 2 carbon emissions, Table 3 Emissions and waste”
“Find out about our approach to biodiversity and how are Grounds and Gardens team ensures we fulfil our commitment”
“The Governors, as Directors of the University, present the Directors' Report for the year ended 31 July 2024”
“ST MARY'S UNIVERSITY, TWICKENHAM — filing history including annual accounts at Companies House”
“St Mary's University, Twickenham has become the 89th UK University to make a public commitment to divest from all fossil fuel companies”
“The Guardians of Creation programme includes research, toolkits and analysis to help Catholic dioceses decarbonise”
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How does St Mary's University, Twickenham compare with other higher education / universities companies?
Where St Mary's University, Twickenham sits among higher education / universities peers.
Among the 67 major higher education / universities brands we've scored, St Mary's University, Twickenham is tied =53rd of 67, with 2 others.
Who scores higher in Higher Education / Universities?
The 3 companies in the sector scoring nearest above St Mary's University, Twickenham.
Coventry University has cut Scope 1+2 emissions 15.5% from 2005 baseline and locked in £13M in capital decarbonisation projects, but Scope 3 remains entirely unquantified.
See the breakdown →Birkbeck has achieved a 56% absolute emissions reduction since 2005 and holds ISO 14001 certification with public annual reporting.
See the breakdown →Bath has reduced Scope 1+2 emissions 51% since 2005 and publishes annual carbon data, but renewable energy procurement is negligible (<1%), Scope 3 remains volatile at 89% of footprint, and net zero targets are under review.
See the breakdown →Which companies moved this week, and why.
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