Social Investment Business Foundation
Notable UK charityAlso known as: Adventure Capital Fund
SIB FOUNDATION INVESTS IN COMMUNITY BASED ORGANISATIONS RUNNING ENTERPRISE ACTIVITIES. WE PROVIDE FINANCE SUCH AS LOANS, GRANTS AND EQUITIES AS WELL AS SUPPORT AND ADVICE.
Activities & Mission
SIB FOUNDATION INVESTS IN COMMUNITY BASED ORGANISATIONS RUNNING ENTERPRISE ACTIVITIES. WE PROVIDE FINANCE SUCH AS LOANS, GRANTS AND EQUITIES AS WELL AS SUPPORT AND ADVICE.
Areas of Operation
Where this charity is registered to operate, as self-declared to the Charity Commission. These are regulatory classifications, not a list of active programmes, and don't necessarily indicate fundraising activity in each location.
Region
Financial Information
Financial Efficiency
Higher than 51% of UK Charitable activities charities with income over £10M (sample: 222). How is this calculated?
Higher than 39% of UK Charitable activities charities with income over £10M. How is this calculated?
Lower overhead than 53% of UK Charitable activities charities with income over £10M. (Lower overhead is generally read as more efficient.) How is this calculated?
Latest Financial Breakdown
Income Sources
Expenditure Categories
Financial Trend
Annual Returns
As filed with the Charity Commission for England and Wales. Most recent filing covers the financial year ending 2025.
One or more years show a significant change in income (over ±100%) compared with the prior year. This usually reflects a merger, transfer of activities, restated accounts, or a one-off legacy — not necessarily a real change in operating scale. See the methodology for context.
| Financial Year | Income | Expenditure | Charitable Spending | Net Assets | Reserves | Staff |
|---|---|---|---|---|---|---|
| 2025 | £188,507,000 | £191,735,000 | £171,648,000 | £38,106,000 | £23,241,000 | 73 / 0 |
| 2024 | £69,549,000 | £69,416,000 | £57,678,000 | £42,358,000 | £22,523,000 | 72 / 0 |
| 2023 | £22,551,000 | £29,987,000 | £15,612,000 | £43,104,000 | £23,485,000 | 45 / 0 |
| 2022 | £9,068,000 | £10,561,000 | £5,115,000 | £49,022,000 | £20,782,000 | 40 / 10 |
| 2021 | £9,536,000 | £17,620,000 | £5,417,000 | £49,609,000 | £2,699,000 | 40 / 0 |
Staff column shows: Employees / Volunteers
Frequently asked questions about Social Investment Business Foundation
What does Social Investment Business Foundation do?
SIB FOUNDATION INVESTS IN COMMUNITY BASED ORGANISATIONS RUNNING ENTERPRISE ACTIVITIES. WE PROVIDE FINANCE SUCH AS LOANS, GRANTS AND EQUITIES AS WELL AS SUPPORT AND ADVICE.
How much income did Social Investment Business Foundation report in 2025?
Social Investment Business Foundation reported total income of £188.51m and reported expenditure of £191.74m for the financial year ending 2025, based on the most recent annual return filed with the Charity Commission.
How efficient is Social Investment Business Foundation?
Social Investment Business Foundation has a program ratio of 91.1%, meaning that share of its income goes directly to charitable activities. This is higher than 51% of UK Charitable activities charities with income over £10M (sample of 222 charities). See our methodology for how this is calculated.
When was Social Investment Business Foundation registered as a charity?
Social Investment Business Foundation was registered with the Charity Commission for England and Wales on 8 December 2006 as charity number 1117185. It has been registered for 20 years.
Who runs Social Investment Business Foundation?
Social Investment Business Foundation is governed by a board of 9 trustees. The chair of trustees is Sonali Siriwardena. Trustees are legally responsible for the charity's governance and are listed in full on its profile.
Where does Social Investment Business Foundation operate?
Social Investment Business Foundation operates in England, as recorded in its Charity Commission filing.
Is Social Investment Business Foundation a registered charity?
Yes — Social Investment Business Foundation is a registered charity in England and Wales, charity number 1117185.
Details
Arc House
82 Tanner Street
LONDON
SE1 3GN
Registry Information
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Major UK charities in the same primary sector, drawn from the curated priority cohort.
Trustees
Sectors & Classifications
Also Known As
- Adventure Capital Fund
Data & trust
- Register data refreshed
- 14 May 2026
- Methodology
- How metrics are calculated