Mobilising Capital for Impact: British International Investment, Emerging Markets, and the Strategic Role of the Isle of Man

Marion de Carte, Senior Client Relationship Manager at Boston Multi Family Office, had the privilege of attending a high level development finance session at the House of Lords earlier this year

The discussions centred on British International Investment’s (BII) strategic approach to supporting fragile economies, the mobilisation of private capital and the importance of due diligence in enabling responsible long‑term investment. For Boston the session reinforced the Isle of Man’s strengths as a trusted financial centre and highlighted clear opportunities to align our expertise with BII’s evolving investment priorities.

Boston Limited Summary of BII and Key Insights

Marion attended the House of Lords by invitation of the Isle of Man South African Chamber of Commerce, a privilege both professionally significant and personally meaningful. The event brought together leaders from development finance, investment, and policy, providing Boston Limited with valuable insight into British International Investment’s strategy and its growing relevance to jurisdictions like the Isle of Man. His Excellency Jeremiah Kingsley Mamabolo, the South African High Commissioner to the United Kingdom, who visited the Isle of Man in 2025, was in attendance.

BII outlined its commitment to deploying capital into fragile and emerging markets, guided by a renewed five‑year strategy focusing on renewable energy, digital infrastructure, and financial services. With commitments totalling approximately £1.8bn (USD 2.0bn) into fragile economies, BII aims to create long‑term economic stability rather than short‑term relief. The organisation emphasised that its model is fundamentally commercial, not aid, with targeted returns and clear exit horizons.

A particular theme relevant to Boston was BII’s shift toward mobilising private capital, where well‑regulated, internationally trusted jurisdictions like the Isle of Man will play an increasingly important role. The Isle of Man’s strengths in private wealth structuring, pension fund administration, family and corporate governance, and special purpose vehicles position it as a natural partner for development finance institutions and global investors seeking stable, compliant structures. Speakers noted that rigorous due diligence, transparency, and long‑term stewardship are all essential characteristics that align with the Isle of Man’s reputation and with Boston’s service model.

The session also highlighted examples of BII’s impactful investments, including successful renewable‑energy projects, significant SME financing initiatives, and digital‑infrastructure programmes that have transformed market access and competition such as reduced mobile‑data costs in Ethiopia following sector investment and SME financing in Zambia.

For Boston, the discussions reinforced several key takeaways:

  • There is increasing demand for trusted, well‑regulated jurisdictions to facilitate development‑aligned investment.
  • Pension funds and institutional investors are expected to play a larger role in long‑term, stable capital deployment.
  • The Isle of Man’s reputation for governance and financial discipline stands out as a competitive advantage.
  • BII’s priorities in energy transition, digital access, and financial infrastructure align with global investor interest and long‑term sustainability goals.

Overall, attending the House of Lords provided an important opportunity for Boston to deepen relationships, showcase the Isle of Man’s capabilities, and gain strategic insight into how BII intends to deliver impact through private‑sector collaboration.

As a multi‑jurisdictional fiduciary service provider with offices in the Isle of Man, Jersey, Malta and the UK, we work closely with professional advisers to establish, manage and administer robust structures that offer continuity, clarity and confidence over time. If you are interested to hear how we can assist you, please get in touch enquiries@bostonmfo.com