Withanage is a Prominent New Zealand Banking family
$12 Billion
Capital Deployed
18% IRR
22
Countries Invested
35
Portfolio Companies
Business Interests
The Withanage family is a major shareholder in The British International Group ‘BIG’. The British International Group (BIG) is an institution-building platform established to sponsor and develop a new generation of multinational organisations anchored in the values, governance traditions, and leadership excellence of Britain and the Commonwealth.
“BIG exports the best of Commonwealth Leadership to build a new generation of organisations applied for the digital world”
British Institutions have a long history of achievement and good governance in law, finance, defence, industrials, technology and social services. BIG draws leadership from Britain and the Commonwealth, which consists of some of the most successful individuals in these fields. We convene the most internationally minded of these luminaries and associated corporations to build new corporations in the form of:
BIG deploys new businesses that are at the forefront of tokenisation, fintech and Artificial intelligence. We will harness opportunities offered by the fourth industrial revolution.
Rahula Withanage
Mr Rahula Withanage is an accomplished financier with over 20 years leading a commercial multi-family office. Mr Withanage was previously a senior advisor at Deloitte & Touche and Andersen Consulting working with intergovernmental institutions. During this time, he specialized in treasury, asset management, corporatization and efficiency management with state owned enterprises and multilateral institutions, including major projects funded by the Asian Development Bank and the World Bank.
Subsequently, he had a 10-year career in Brunei where he worked with Brunei Telecom and eventually Royal Brunei Airlines, where he was a director and head of management audit. Mr Withanage continued as an advisor to the chairman and board of directors of Royal Brunei Airlines, until he co-founded the Withanage Group with operations in Bahrain and the UAE. Rahula Withanage was a co-founder and CEO of the BMB Group. He now runs the Withanage Family Office and affiliate companies and is chairman of the Withanage Foundation.
Rayo Withanage
Rayo Withanage is a financier and inventor focused on sovereign infrastructure, financial systems, and impact technologies. His work spans large cap private equity and the creation of next-generation platforms that integrate artificial intelligence, blockchain, and sustainable technologies.
As a financier, Mr Withanage founded BMB which grew into a multifamily office with over $15Bilion in assets under management. He also acquired and led EMP Global which was a pioneer in emerging markets private equity deploying over $7Billion in infrastructure investments for some of the most important sovereign wealth funds including GIC-Singapore, ADIA and the PIF of Saudi Arabia.
As an inventor, Mr Withanage has developed proprietary systems in artificial intelligence, block chain and sustainable industry what were acquired in 2026 by the British international Group - a leading institution building platform for Britain and the Commonwealth. At BIG Mr Withanage is a venture partner focused on technology and industry.
Withanage’s platforms are founded on the principles of Virtue Capitalism that harness social and environmental impact as a differentiator to drive business performance. His platforms seek to support systemic change and prove that doing good is good for business.
“Success is not final; failure is not fatal: It is the courage to continue that counts.”
— Winston S. Churchill