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THE INTERNATIONAL INSTITUTE FOR STRATEGIC STUDIES

Registered charity 206504 · accounts filings on the Charity Commission register · also known as I I S S

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Latest income
£31.6m
Latest spending
£29.5m
Registered
1962
Accounts read
FY2025

Financial health, per its FY2025 accounts

The accounts state that the Institute held free reserves of £11,896,000, which equated to approximately 6 months of operating expenditure, meeting the Trustees' policy target of between 3 and 6 months. Per the Trustees' report, the financial health is considered sound, with total net assets increasing to £39,417,000 and no loan liabilities at the year-end.

What the accounts disclose

Reserves policy: three to six months of operating expenditure (held: £11.9m)
“the Trustees aim to hold free reserves equivalent to between 3 and 6 months operating expenditure.”
Per its FY2025 accounts as filed with the Charity Commission.
Trading subsidiary: Arundel House Enterprises Limited
“The Institute’s commercial trading subsidiary, Arundel House Enterprises Limited (AHEL), experienced much improved trading conditions” — page 14
Per its FY2025 accounts as filed with the Charity Commission.

Accounts audited by Crowe U.K. LLP. Discloses 4 of 6 completeness components.

Structured financials (annual return, FY ending 30/09/2025)

Total income
£33.7m
Total spending
£29.5m
Cost of raising funds
£67k
Reserves (reported)
£11.9m
Employees
179

Reported reserves equal ~4.8 months of spending — above the median for charities its size (median 4.6 months; benchmarks).

Trustees

Trustee list from the Charity Commission register (current, not historical).

Operates in: Bahrain · City Of London · Germany · India · Singapore · United States

Income and spending

Financial year endIncomeSpending
30/09/2025£31.6m£29.5m
30/09/2024£26.5m£25.5m
30/09/2023£25.0m£25.2m
30/09/2022£24.5m£24.0m
30/09/2021£18.4m£17.6m

Common questions

Is THE INTERNATIONAL INSTITUTE FOR STRATEGIC STUDIES financially healthy?

The accounts state that the Institute held free reserves of £11,896,000, which equated to approximately 6 months of operating expenditure, meeting the Trustees' policy target of between 3 and 6 months. Per the Trustees' report, the financial health is considered sound, with total net assets increasing to £39,417,000 and no loan liabilities at the year-end. Its FY2025 accounts were audited by Crowe U.K. LLP.