WESTPAC OFFICE TRUST(WOT)

delisted following completion of the trust scheme of arrangement between the Trust and Mirvac Group

we understand Consideration under the trust scheme in the form of scrip option, cash option or the proceeds under a sale facility (depending on which option was elected) will be despatched or paid to unitholders as follows: under the scrip option Monday, 9 August 2010, under the cash option Monday, 9 August 2010, under the sale facility Wednesday, 18 August 2010 - WOT Unitholders received the equivalent of either 0.597 stapled securities in Mirvac Group or $0.86 for every WOT Unit that they held (subject to an aggregate limit of AUD$200 million) ("ash Option") - investors who held a beneficial interest in WOT units by way of instalment receipts ("IRs") received the beneficial interest in 0.597 Mirvac Securities for every IR that they held or $0.86 for every IR that they held on the Record Date. $0.50 of the proceeds in respect of each IR held will be applied to repay the instalment debt relating to each IR, and the balance of the proceeds (if any) will be paid to the IR holder - investors who did not wish to retain the Mirvac Securities to be issued to them or to receive cash under the Cash Option may have elected to participate in a sale facility (the latest date for payment under the sale facility was Wednesday, 18 August 2010)

releases letter to investors regarding holding statements and transaction confirmation statements

lodges reports for the year ended 30 June 2010

the aggregate demand for the Cash Option (as described in the WOT explanatory memorandum dated 16 June 2010 ("Explanatory Memorandum")) has exceeded the aggregate limit of $200 million. As elections for the Cash Option have exceeded $200 million, all applications for the Cash Option will be scaled back pro rata. The scale back ratio is approximately 25.28 per cent. This means that those Scheme participants who elected the Cash Option will receive approximately 74.72 per cent of their Scheme consideration in cash. The balance of their Scheme consideration will be in Mirvac securities or in cash under the sale facility, depending on the election made by the Scheme participant

the securities of Westpac Office Trust (the "Trust") will be suspended from quotation from the close of trading today, at the request of the Trust, following unitholder approval of the trust scheme between the Trust and Mirvac Group

Trust announces that today it obtained judicial advice from the Supreme Court of New South Wales to the effect that it is justified in acting upon the resolutions passed at the meeting of WOT unitholders held on Wednesday, 21 July 2010, and in doing all things and taking all necessary steps to implement the trust scheme under which Mirvac Funds Limited as responsible entity of the Mirvac Property Trust will acquire all of the units in WOT. As announced on 21 July 2010, WOT unitholders have approved the consolidation of all WOT units on a one for 0.597 basis on that day, with any fractional post-consolidation entitlements being rounded up to the nearest whole unit. The court order (a copy of which is attached to this announcement) has been lodged with the Australian Securities and Investments Commission, together with a supplemental deed amending the constitution of WOT. The scheme is therefore effective. WOT units have been suspended from trading with effect from the close of trading today. The scheme is scheduled to be implemented on Wednesday, 4 August 2010

the instalment receipts ("IRs") of Westpac Office Trust (the "Trust") will be suspended from quotation at the close of trading today, Friday 11 September 2009, at the request of the Trust following the approval by unit holders of a restructure of the IRs (the "Restructure")

quotation of the Trust's fully paid ordinary units underlying the IRs was granted on 5 August 2003. The fully paid ordinary units were not permitted to trade on ASX until payment of the final instalment of the IRs. Following approval of the Restructure, the fully paid ordinary units of the Trust will commence trading from the opening of trade on Monday, 14 September 2009