Asian Infrastructure Investment Bank (AIIB)
The AIIB is a Beijing-based development bank that finances infrastructure in Asia and beyond; it has 111 approved members and is capitalised at USD 100 billion (AIIB). China holds 26.37% of the voting power and the UK 2.85%, the UK having been a founding member. Its President, Zou Jiayi, also chairs the Board of Directors.
Who leads it
- President and Chair of the Board of Directors: Zou Jiayi (since 16 January 2026) (aiib.org)
- Vice President and Corporate Secretary: Sir Sherard Cowper-Coles (December 2025 (joined AIIB)) (aiib.org)
- UK Governor: John Healey (Chancellor of the Exchequer) (since 20 July 2026 (appointed Chancellor)) (gov.uk)
The UK and the AIIB
The UK has been a member since 25 December 2015, holding 3.1288% of total subscriptions and 2.8534% of voting power (AIIB members table, updated 16 October 2026). The Chancellor is the UK Governor; HM Treasury reports US$2.4 billion (about £1.9 billion) of UK callable capital. Sir Sherard Cowper-Coles, from the UK, is AIIB Vice President and Corporate Secretary.
Key figures
| Figure | Value | Source |
|---|---|---|
| Approved members (as stated when read) | 111 | AIIB, read 20 October 2026 |
| Capital (as stated when read) | USD 100 billion | AIIB, read 20 October 2026 |
| Approved financing (since 2016) | USD 70 billion in over 360 projects | AIIB, read 20 October 2026 |
| China's share of voting power (updated 16 October 2026) | 26.3656% (subscriptions 30.5026%) | AIIB, read 20 October 2026 |
| UK share of voting power (updated 16 October 2026) | 2.8534% (subscriptions 3.1288%) | AIIB, read 20 October 2026 |
| Regional members' share of voting power (updated 16 October 2026) | 72.6637% | AIIB, read 20 October 2026 |
| UK callable capital (remote contingent liability) (31 March 2026) | US$2.4 billion (about £1.9 billion) | HM Treasury, read 20 October 2026 |
| UK capital structure (31 March 2026) | 20% paid-in, 80% callable | HM Treasury, read 20 October 2026 |
| Financing target (corporate strategy as updated in 2025) | USD 17 billion a year by 2030 | AIIB, read 16 October 2026 |
What it decides
- Finances infrastructure and other productive sectors through loans, equity and guarantees (AIIB).
- The President is elected by shareholders for a five-year term and may be re-elected once (AIIB senior management page).
- Board of Governors elected Zou Jiayi in June 2025; founding President Jin Liqun's second term ended on 15 January 2026.
- Voting power reflects capital subscriptions; regional (Asian) members hold 72.66% of votes (AIIB members table).
Records you can check
- AIIB members and voting powerEvery member's joining date, subscription and voting share
- AIIB project listApproved and proposed projects with documents
- HM Treasury Annual Report and Accounts 2025-26Value of the UK's AIIB shareholding and callable capital
Common questions
Is the UK a member of the AIIB?
Yes, since 25 December 2015. The UK holds 2.8534% of voting power (AIIB members table, updated 16 October 2026).
How much has the UK committed to the AIIB?
HM Treasury reports US$2.4 billion (about £1.9 billion) of callable capital that has not been paid in; the UK's investment is 20% paid-in and 80% callable (HM Treasury accounts, 31 March 2026).
Does China control the AIIB?
China is the largest shareholder, with 26.3656% of voting power and 30.5026% of subscriptions (AIIB members table, 16 October 2026).
Who runs the AIIB?
Zou Jiayi became President and Chair of the Board of Directors on 16 January 2026 (AIIB).
Other bodies at level 9
- African Development Bank
- Asian Development Bank
- Bank for International Settlements
- Basel Committee on Banking Supervision
- European Bank for Reconstruction and Development
- European Investment Bank
- Financial Stability Board
- International Monetary Fund
- Paris Club
- World Bank Group
Sources
- AIIB: About, read 16 October 2026
- AIIB: Members of the Bank, read 20 October 2026
- AIIB members table data (voting-power.js), read 20 October 2026
- AIIB: Senior management, read 20 October 2026
- Zou Jiayi Assumes Presidency of AIIB, read 20 October 2026
- AIIB: Our history, read 20 October 2026
- HM Treasury Annual Report and Accounts, year to 31 March 2026, read 20 October 2026
- GOV.UK: The Rt Hon John Healey MP, read 20 October 2026