Holding(s) in Company

Gulf Keystone Petroleum Ld
18 December 2006



Letter to:  Gulf Keystone Petroleum Ltd 
Dated 15th December 2006

Enclosed are amended notifications of disclosable interests under your Bye-Law 
Section 168.3.1. Please note that while this information details the disclosable 
interests of more than one entity, the enclosed disclosure constitutes separate 
notifications of interest which have been combined solely for purposes of 
clarity and efficiency. It is not intended to indicate that any of these 
entities act as a group or in concert with respect to these interests.

These disclosures are made in the interest of conformity with your Bye-Law 
Section 168.3.1. The interest detailed herein were acquired solely for 
investment purposes. For disclosure purposes, holdings should be represented as 
FMR Corp. and its direct and indirect subsidiaries, and Fidelity International 
Limited (FIL) and its direct and indirect subsidiaries, both being 
non-beneficial holders.

If you have any questions please contact Teresa Garry on email 
[e-mail] or via Fax on 01737 837 450.

From: 
      Teresa Garry
      Regulatory Reporting Analyst     
      Fidelity International



Amendment 4

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.

By
Rani Jandu
Regulatory Reporting Senior Manager, FIL - Investment Compliance
Duly authorized under Powers of Attorney dated August 25,2004 by Eric D. Roiter
by and on behalf of FMR Corp, and its direct and indirect subsidiaries, and 
Fidelity International Limited and its direct and indirect subsidiaries.



Schedule A

Security:    GULF KEYSTONE PETROLEUM LTD                             Amendment 4
 

Current ownership percentage:                    7.14%
Total Shares Held:                          19,656,355
Shares in issue:                           275,480,140
Change in holdings since last filing:      (69,343,645) ordinary shares
 
 

                            MANAGEMENT 
SHARES HELD                  COMPANY           NOMINEE/REGISTERED NAME

 2,069,300                       FPM             JP MORGAN, BOURNEMOUTH 
   619,200                       FPM             HSBC BANK PLC
   445,100                       FPM             NORTHERN TRUST LONDON  
   437,900                       FPM             STATE STR BK AND TR CO LNDN (S
13,736,900                       FISL            JP MORGAN, BOURNEMOUTH 
   699,300                       FIL             JP MORGAN, BOURNEMOUTH 
 1,648,655                       FII             JP MORGAN, BOURNEMOUTH  




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