THE ROYAL UNITED SERVICES INSTITUTE FOR DEFENCE AND SECURITY STUDIES
Registration #210639 · Registered
www.rusi.orgdirector@rusi.org
RUSI WHITEHALL SW1A 2ET
RUSI is the UK's leading independent think tank on international defence and security. Its mission is to be an analytical research-led global forum for informing, influencing and enhancing public debate on a safer and more stable world.
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About THE ROYAL UNITED SERVICES INSTITUTE FOR DEFENCE AND SECURITY STUDIES
THE ROYAL UNITED SERVICES INSTITUTE FOR DEFENCE AND SECURITY STUDIES is a registered charity in England and Wales (registration number 210639). Based on official Charity Commission data, it holds a "Platinum" rating with a CharityScore of 88/100 — one of the highest-rated charities in England and Wales for governance and transparency. This places it among the top-rated charities in our database, reflecting strong performance across governance, financial health, and regulatory compliance. In its most recent reporting year (2025), THE ROYAL UNITED SERVICES INSTITUTE FOR DEFENCE AND SECURITY STUDIES reported a total income of £16,616,542 and total expenditure of £16,561,198, a spending ratio of 100% which is broadly in line with its income. According to the Charity Commission register, THE ROYAL UNITED SERVICES INSTITUTE FOR DEFENCE AND SECURITY STUDIES describes its activities as follows: RUSI is the UK's leading independent think tank on international defence and security. Its mission is to be an analytical research-led global forum for informing, influencing and enhancing public debate on a safer and more stable world. Our analysis found no significant governance concerns for THE ROYAL UNITED SERVICES INSTITUTE FOR DEFENCE AND SECURITY STUDIES. No regulatory actions, filing failures, or financial anomalies were detected in the available public data. This profile is based on data publicly available from the Charity Commission for England and Wales and is updated periodically as new filings are processed. CharityScore UK provides independent, data-driven transparency ratings to help donors give with confidence — we are not affiliated with this charity or any government body.

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Financial History
Latest spending ratio: 99.7% of income spent on charitable work
| Year | Income | Spending | Ratio |
|---|---|---|---|
| 2025 | £16,616,542 | £16,561,198 | 100% |
Data sourced from the Charity Commission for England & Wales · Last scored 6/11/2026