Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES

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

Petrofac Limited

2 Reason for the notification (please tick the appropriate box or boxes):

An acquisition or disposal of voting rights

 X

An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached

An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments

An event changing the breakdown of voting rights

Other (please specify):

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

Legis Trust Limited as Trustee of the Nola Trust of which Mr Maroun Semaan is a potential beneficiary.

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

 N/A

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

 13 September 2010

6. Date on which issuer notified:

 14 September 2010

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

 8%

8. Notified details:

A: Voting rights attached to shares

Class/type of shares

if possible using the ISIN CODE

Situation previous to the triggering transaction

Resulting situation after the triggering transaction

Number of Shares

Number of Voting Rights

Number of shares

Number of voting rights

% of voting rights

Direct

Direct

Indirect

Direct

Indirect

 Ordinary

 30,068,799

30,068,799

27,543,799

27,543,799

 Nil

7.967

Nil

 GB00B635TG28

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/ Conversion Period

Number of voting rights that may be acquired if the instrument is exercised/ converted.

% of voting rights

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

Resulting situation after the triggering transaction

Type of financial instrument

Exercise price

Expiration date

Exercise/ Conversion period

Number of voting rights instrument refers to

% of voting rights

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

27,543,799

7.967

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

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:

Notification is based on a total voting rights figure of 345,715,053.

Maroun Semaan is a beneficiary of the Nola Trust. Mr Semaan also holds 538,877 Petrofac Limited shares in his name giving him a total beneficial interest in 28,082,676 shares in Petrofac Limited.

For further information in relation to the disposal of voting rights please refer to the announcement released under RNS number 6599S.

14. Contact name:

Sofia Bernsand

15. Contact telephone number:

0207 811 4900