Exercise of Over-allotment

Petrofac Limited
06 October 2005

Not for distribution, directly or indirectly, in or into the United States or
any jurisdiction in which such distribution would be unlawful.



6th October 2005



Exercise of Over-allotment option: Petrofac Limited

In connection with the Offer in relation to the following Ordinary Shares:



Petrofac Limited Ordinary Shares of US$0.025 each
ISIN Code: GB00B0H2K534



In connection with the Offer, Credit Suisse First Boston (Europe) Limited as
stabilisation manager (the "Stabilisation Manager"), hereby announces that it
has exercised the Over-allotment option over 14,993,928 ordinary shares granted
to it by certain of the selling shareholders, in connection with the Offer of
149,939,286 ordinary shares. The Over-allotment option represents approximately
10 per cent of the number of ordinary shares sold under the Offer.



The Offer Price of Petrofac Limited Ordinary Shares of US$0.025 was set at 215
pence on 3rd October 2005



The stabilisation period commenced at 8am on 4th October 2005 and may continue
until close of business on 3rd November 2005.



This announcement is for information purposes only and does not constitute an
invitation or offer to underwrite, subscribe for or otherwise acquire or dispose
of any securities of the Issuer in any jurisdiction.



This announcement and the offer of the securities to which it relates are only
addressed to and directed at persons outside the United Kingdom and persons in
the United Kingdom who have professional experience in matters related to
investments or who are high net worth persons within article 12(5) of the
Financial Services and Markets Act 2000 (Financial Promotion) Order 2005 and
must not be acted on or relied on by other persons in the United Kingdom.



In addition, if and to the extent that this announcement is communicated in, or
the offer of the securities to which it relates is made in, any EEA Member State
that has implemented Directive 2003/71/EC (together with any applicable
implementing measures in any Member State, the "Prospectus Directive") before
the publication of a prospectus in relation to the securities which has been
approved by the competent authority in that Member State in accordance with the
Prospectus Directive (or which has been approved by a competent authority in
another Member State and notified to the competent authority in that Member
State in accordance with the Prospectus Directive), this announcement and the
offer are only addressed to and directed at persons in that Member State who are
qualified investors within the meaning of the Prospectus Directive (or who are
other persons to whom the offer may lawfully be addressed) and must not be acted
on or relied on by other persons in that Member State.

This announcement is not an offer of securities for sale into the United States.
The securities have not been, and will not be, registered under the United
States Securities Act of 1933 and may not be offered or sold in the United
States absent registration or an exemption from registration.  There will be no
public offer of securities in the United States.



Credit Suisse First Boston (Europe) Limited contacts: Tom Ahearne / Nick
Williams / Stephane Gruffat Telephone: [phone]



Stabilisation / FSA


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