Appointment of Chair Designate

29 April 2026

3i Infrastructure plc ('3iN' or the 'Company') announces that it has approved the appointment of Andrew Sykes to succeed Richard Laing as Chair of the Board of Directors (the 'Board').

It is intended that Andrew Sykes will join the Board as an independent non-executive Director and Chair Designate on 23 July 2026 when he will also join the Management Engagement Committee and Nomination and Remuneration Committees. He will take over as Chair with effect from 1 January 2027, following a handover period. At that point, Richard Laing will step down as Chair and as a non-executive Director of the Company.

Andrew has a wealth of investment trust, infrastructure, financial services and non-executive experience and spent 26 years of his executive career at Schroders plc. He is currently Senior Independent Director of Intermediate Capital Group plc ('ICG plc'), a global alternative asset manager, having joined the ICG plc board in March 2018, and served as Interim Chair between March 2022 and February 2023.

Andrew previously served as Senior Independent Director at BBGI Global Infrastructure SA from 2022 until it de-listed in 2025 and as Chairman of Smith & Williamson from 2013 to 2020. He was also Chairman of SVG Capital plc until 2017, having served on the board since 2010 and as Chairman since 2012.

Stephanie Hazell, 3iN's Senior Independent Director, who led the search for Richard Laing's successor, said:

"After a thorough search for a suitable successor, we are very pleased to appoint Andrew Sykes as Chair Designate. Andrew is an experienced director of UK-listed companies, including investment trusts. He has a deep knowledge of the financial services and infrastructure sectors, which, together with his background as a senior executive in the asset management sector, will be hugely valuable in strengthening the Board's range of skills and expertise and leading the Board in the Company's execution of its strategic objectives. We are excited to welcome him to the Board.

On behalf of the Board, I would like to thank Richard for his outstanding leadership and service to the Company and I look forward to continuing to benefit from his leadership over the coming months."

Andrew Sykes, 3iN's Chair Designate, said:

"I am pleased to be appointed to the Board of 3i Infrastructure plc and look forward to working with the Board in the delivery of the Company's strategy and continuing to generate long-term sustainable returns for shareholders."

Richard Laing, 3iN's Chair, said:

"I am delighted to welcome Andrew to the Board as Chair Designate and look forward to working with him as a member of the Board from July to ensure a smooth transition into the role of Chair in January 2027."

Andrew Sykes will stand down from the board of ICG plc at the end of March 2027, having completed a nine-year tenure.

As at 29 April 2026, Andrew Sykes held 139,962 ordinary shares in the Company.

The Company confirms there is no further information required to be disclosed pursuant to UK Listing Rule 6.4.8.

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About 3i Infrastructure plc

3i Infrastructure plc is a Jersey-incorporated, closed-ended investment company, an approved UK Investment Trust, listed on the London Stock Exchange and regulated by the Jersey Financial Services Commission. The Company's purpose is to invest responsibly in infrastructure, delivering long-term sustainable returns to shareholders and having a positive influence on its portfolio companies and their stakeholders.

3i Investments plc, a wholly owned subsidiary of 3i Group plc, is authorised and regulated in the UK by the Financial Conduct Authority and is the investment manager of 3i Infrastructure plc.