Investing responsibly in infrastructure

Delivering long-term sustainable returns to shareholders and having a positive influence on our portfolio companies and their stakeholders.


Find out how 3iN’s portfolio of private infrastructure businesses and our active engagement with management teams makes us unique in the listed infrastructure sector.

Play video

Press release 08 May 2024

Results for the year to 31 March 2024

Open link

Latest report

Highlights – Annual report 2024

Open link

Valorem 2 (2)

Backing long-term megatrends

We aim to have a well-diversified portfolio of assets across a range of megatrends that provide a supportive environment for long-term sustainable business growth.

What we do

Long-term track record

Since its launch in 2007, 3i Infrastructure has built a portfolio that has provided significant income and consistent capital growth.

Track record

Investor hub

Share Price

04:35 on 25 Jun 2024

  • 3i Infrastructure (LSE)


    -0.50 -0.15%)

  • FTSE 250


    Value at last close

Share price tools

Latest results

  • Results for the year to 31 March 2024

  • Open link

Results & presentations

Key highlights

  • £ 347 m
  • Total return for the year to 31 March 2024

  • 11.4 %
  • Total return on opening NAV

  • 362.3 p
  • NAV per share

Our performance

Our sustainable approach

We see a strong link between companies with high ESG standards and those that are able to achieve long-term sustainable business growth.

Our sustainable approach

Future Biogas Anaerobic Digestion Plant

Latest news

Press release 08 May 2024

Results for the year to 31 March 2024

Read release

Press release 28 Mar 2024

3i Infrastructure plc – Pre-close update

Read release

Press release 26 Jan 2024

3i Infrastructure plc – Q3 Performance update

Read release

Richard Laing


Another year of outperformance from our unique portfolio.”

Richard Laing, Chair, 3i Infrastructure plc


View our Annual report and accounts 2024