Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTERESTS IN SHARES

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached:

GCP Infrastructure Investments Limited

2. Reason for the notification:

An event changing the breakdown of voting rights

An internal transfer of holdings from a discretionary account to a non-discretionary account

3. Full name of person(s) subject to the notification obligation:

Williams de Broë Limited

4. Full name of shareholder(s) (If different from 3)

Pershing Nominees Limited (Nominee company used by Williams de Broë Limited)

5. Date of the transaction and date on which the threshold is crossed or reached:

28 August 2012

6. Date on which issuer notified:

30 August 2012

7. Threshold(s) that is/are crossed or reached:

From 7% to below 5%

8. Notified details:

A: Voting rights attached to shares

Resulting situation after the triggering transaction

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

N/A

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments

Resulting situation after the triggering transaction

N/A

9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable:

N/A

Proxy Voting:

10. Name of the proxy holder:

N/A

11. Number of voting rights proxy holder will cease to hold:

N/A

12. Date on which proxy holder will cease to hold voting rights:

N/A

13. Additional information:

N/A

14. Contact name:

Tina Wishart - Head of Compliance and MLRO

15. Contact telephone number:

+44 (0)20 7072 7577

04 September 2012