Special dividend and proposed share consolidation

21 February 2018

3i Infrastructure plc - Special dividend and proposed share consolidation

3i Infrastructure plc ("3i Infrastructure" or the "Company") has performed strongly in the financial year to date, with the realisations of the holdings in Elenia and Anglian Water Group achieved by the Investment Adviser generating exceptional value for shareholders.

Further to the announcement made on 31 January 2018 of the Company's intention to return surplus cash to shareholders, the Board of the Company has approved the payment of a special dividend of £425 million in order to maintain an efficient balance sheet.

Highlights

· The Company will return £425 million to shareholders by way of a special dividend of 41.4 pence per Existing Ordinary Share to be paid on 29 March 2018.

· After payment of the special dividend, the Company will retain sufficient liquidity to make new investments from the Investment Adviser's healthy pipeline.

· A share consolidation is proposed, with every 19 Existing Ordinary Shares being consolidated into 15 New Ordinary Shares. The share consolidation is intended to maintain comparability, as far as possible, of the Company's share price before and after the payment of the special dividend.

A circular (the "EGM Circular") will be released later today containing the notice of an extraordinary general meeting of the Company relating to a share consolidation in conjunction with the special dividend. The EGM will be held at midday on 14 March 2018 at the offices of Hogan Lovells International LLP, Atlantic House, Holborn Viaduct, London EC1A 2FG.

Defined terms used in this announcement shall bear the meanings given in the EGM Circular.

Ends

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About 3i Infrastructure plc

3i Infrastructure plc is a Jersey-incorporated, closed-ended investment company, listed on the London Stock Exchange and regulated by the Jersey Financial Services Commission. The Company is a long-term investor in infrastructure businesses and assets. The Company's market focus is on economic infrastructure and greenfield projects in developed economies, principally in Europe, investing in operating businesses and projects which generate long-term yield and capital growth.

3i Investments plc, a wholly-owned subsidiary of 3i Group plc, is authorised and regulated in the UK by the Financial Conduct Authority and acts as Investment Adviser to 3i Infrastructure plc.

This press release is not for distribution (directly or indirectly) in or to the United States, Canada, Australia or Japan and is not an offer of securities for sale in or into the United States, Canada, Australia or Japan. Securities may not be offered or sold in the United States absent registration under the U.S. Securities Act of 1933, as amended (the "Securities Act"), or an exemption from registration under the Securities Act. Any public offering to be made in the United States will be made by means of a prospectus that may be obtained from the issuer or selling security holder and will contain detailed information about 3i Group plc, 3i Infrastructure plc, 3i India Infrastructure Fund and management, as applicable, as well as financial statements. No public offering in the United States is currently contemplated.