Anna Dellis
Partner
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- Full Name
- Anna Dellis
- Title
- Partner, Infrastructure
- Firm
- 3i Group plc (managing 3i Infrastructure plc)
- Firm Type
- Listed infrastructure investment / private equity manager — not an angel investor (the stub's "Angel Investors / Seed Round" classification is inaccurate)
- Investment Stage
- Mature, cash-generative economic infrastructure assets (mid-market to large-cap); this is buyout/asset-level infrastructure investing, not seed-stage venture
- Sector Focus
- Economic infrastructure — regulated utilities, energy, oil/liquid storage, transport & rolling stock, telecommunications infrastructure, and social infrastructure
- Geographic Focus
- Primarily Europe (UK and Northern Europe)
- Location
- London, United Kingdom
Background
Anna Dellis is a Partner in the Infrastructure team of 3i Group plc, the London-listed international investment manager. She joined 3i's Infrastructure team in 2006 and was promoted to Partner in 2018 as part of a group of senior promotions in the team. She is based in London and works on the portfolio managed for 3i Infrastructure plc (a FTSE 250 listed infrastructure investment company) and related 3i-managed infrastructure vehicles.
Before joining 3i, Anna qualified as a Chartered Accountant (ICAEW) and advised on infrastructure finance and privatisation at PricewaterhouseCoopers (PwC). She holds a degree in German and French from the University of Nottingham. Over more than a decade at 3i she has built direct investment and asset-management experience across a wide range of infrastructure sectors, including airports, regulated utilities, energy, telecommunications infrastructure, train rolling stock and social infrastructure.
Since becoming Partner, Anna leads asset management for 3i's economic infrastructure portfolio. Her remit includes oversight of portfolio-company operating performance, recruitment of board members and senior executives into portfolio companies, and delivery of cross-portfolio value-creation and sustainability initiatives. She has served as a non-executive director on the boards of portfolio companies, including ESVAGT (Danish offshore energy service vessels) and Advario Singapore (formerly linked to 3i's Oystercatcher oil-storage investment). She is also a visible spokesperson for 3i Infrastructure on sustainability, appearing in the firm's investor-facing video content on the topic.
Investment Thesis & Focus
- Invests in economic infrastructure — businesses with essential, often regulated or contracted, assets and resilient cash flows — rather than early-stage companies.
- Sector coverage spans regulated utilities, energy, oil/liquid storage, transport and rolling stock, telecoms infrastructure and social infrastructure.
- Emphasis on active asset management and value creation post-investment: strengthening boards and management, driving operational performance, and running cross-portfolio initiatives.
- Sustainability/ESG is a stated priority in how she manages assets — she is a designated 3i Infrastructure spokesperson on why sustainability matters to the portfolio.
- Geographic focus is Europe (UK and Northern Europe), consistent with 3i Infrastructure's mandate.
Notable Investments
- Oystercatcher — investment in oil/liquid bulk storage terminals; associated with the business now operating as Advario Singapore, where Anna has represented 3i on the board.
- Elenia — Finnish electricity distribution and heating utility; a core regulated-utility holding.
- ESP (ESP Utilities Group) — UK independent gas/electricity network utility.
- Eversholt Rail — one of the UK's major rolling-stock leasing companies (train fleet ownership).
- BCA (British Car Auctions / BCA Marketplace) — vehicle remarketing and logistics business.
- ESVAGT — Danish operator of emergency rescue and offshore wind service operation vessels; Anna served as a non-executive director.
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