Holding(s) in Company

Gulf Keystone Petroleum Ld
12 October 2006


Amendment 1

NOTIFICATIONS UNDER BYE-LAWS SECTION 168.3.1

1. Company in which shares are held: Gulf Keystone Petroleum Ltd

2. Notifiable Interest:     Ordinary Shares

     (A)   FMR Corp
           82 Devonshire Street
           Boston, MA 02109

           Parent holding company of Fidelity Management & Research
           Company (FMRCO), investment manager for US mutual funds, and
           Fidelity Management Trust Company (FMTC), a US state chartered
           bank which acts as a trustee or investment manager of various
           pension and trust accounts. (See Schedule A for listing of Registered
           Shareholders and their holdings).

     (B)   Fidelity International Limited (FIL)
           P.O. BOX HM 670
           Hamilton HMCX, Bermuda

           Parent holding company for various direct and indirect subsidiaries,
           including Fidelity Investment Services Ltd. (FISL), Fidelity Gestion
           (FIGEST), Fidelity Investments Advisory (Korea) Limited (FIA(K)L),
           Fidelity Investments Management (Hong Kong) Limited (FIMHK),
           Fidelity Pension Management (FPM) and Fidelity Investments 
           International (FII), investment managers for various non-US 
           investment companies and institutional clients.

3. The notifiable interests also comprise the notifiable interest of:

           Mr. Edward C. Johnson 3d
           82 Devonshire Street
           Boston, MA 02109

   A principal shareholder of FMR Corp. and Fidelity International Limited.

4. The notifiable interests include interest held on behalf of authorized
   unit trust schemes in the U.K., notwithstanding the exemption from 
   reporting pursuant to Section 209 (1)(h) of the Companies Act 1985.

5. These notifications of disclosable interests constitute separate
   notifications of interest in the shares and are combined solely for 
   the purposes of clarity and efficiency. Nothing herein should be taken to
   indicate that FMR Corp. and its direct and indirect subsidiaries, 
   Fidelity International Limited and its direct and indirect subsidiaries
   or Mr. Edward C. Johnson 3d act as a group or in concert in respect of 
   the disclosed interests, or that they are required to submit these 
   notifications on a joint basis.

6. The disclosable interests arise under section 208(4)(b) of the Act,
   namely where a person, not being the registered holder, is entitled
   to exercise a right conferred by the holding of the shares or to 
   control the exercise of such rights, or under section 203 of the Act
   respectively.



                                                                    Amendment 1

Security: GULF KEYSTONE PETROLEUM LTD


Current ownership percentage:                 3.84%

Total Shares Held:                       10,585,000
                                  
Shares in issue:                        275,332,140

Change in holdings since last filing:    +3,452,265 ordinary shares


                                     MANAGEMENT
                      SHARES HELD    COMPANY       NOMINEE/REGISTERED NAME
                                           
                                           
                       9,465,300     FISL          JP MORGAN, BOURNEMOUTH
                       1,119,700     FII           JP MORGAN, BOURNEMOUTH




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