Market announcements

Sections 23 and 24, Securities Markets Act 1988

Relevant event being disclosed: Change in the number of voting securities in which a substantial security holder has a relevant interest (section 32(2)) (1)

Date of relevant event: 29 June 2010

To: NZX (3)

And: A2 Corporation Limited (4)

Date this disclosure made: 23 July 2010

Date last disclosure made: 14 September 2009 (5)

Substantial security holder(s) giving disclosure

Name(s): AMP Capital Investors (New Zealand) Limited and AMP Capital Investors Limited(6)

Contact details: Pauline Edwards Ph 04-494-2184 Email pauline.edwards@ampcapital.co.nz

Summary of substantial holding to which disclosure relates

Class of listed voting securities: Ordinary shares

Summary for: AMP Capital Investors (New Zealand) Limited and AMP Capital Investors Limited

For this disclosure,—

(a) total number held in class: 57,763,643

(b) total in class: 501,507,800

(c) total percentage held in class: 11.518%

For last disclosure,—

(a) total number held in class: 56,553,743

(b) total in class: 371,319,240

(c) total percentage held in class: 15.23%

Details of transactions and events giving rise to relevant event

Details of the transactions or other events requiring disclosure under the instructions to this form:(11) Increase in shares on issue. (12)

Details of relevant interests in substantial holding after relevant event

Details for: AMP Capital Investors (New Zealand) Limited and AMP Capital Investors Limited

Nature of relevant interest(s): Investment Manager and non-beneficial owner of securities

For that relevant interest,—(15)

(a) number held in class: 57,763,643 (16)

(b) percentage held in class: 11.518% (17)

(c) current registered holder(s) of securities: See schedule one

(d) registered holder(s) of securities once transfers registered: not applicable

Additional information

Nature of connection between substantial security holders: AMP Capital Investors (New Zealand) Limited and AMP Capital Investors is the Investment Manager for beneficial owners of the ATM shares (See schedule one attached)(20)

Address(es) of substantial security holder(s): C/- Ground Floor, PWC Building, 113-119 The Terrace, Wellington

Name of any other person believed to have given, or believed to be required to give, a disclosure under the Act in relation to the securities to which this disclosure relates: Not Applicable

Declaration

I, Pauline Carol Edwards, declare that, to the best of my knowledge and belief, the information contained in this disclosure is correct and that I am duly authorised to make this disclosure by all persons for whom it is made.