Holding(s) in Company

Gulf Keystone Petroleum Ld
11 April 2008


Not for release, publication or distribution in or into jurisdictions other than
 the United Kingdom and Bermuda where to do so would constitute a contravention
                   of the relevant laws of such jurisdiction


11 April 2008


                        GULF KEYSTONE PETROLEUM LIMITED
                       ("Gulf Keystone" or "the Company")

                             Holding(s) in Company


The Company was informed on 10th April 2008 that UBS AG London Branch is
interested in 19,530,605 ordinary shares in the Company, representing 7.01 per
cent. of the issued share capital of the Company.


Enquiries


Gulf Keystone Petroleum:                   [phone]

Todd Kozel, Executive Chairman


RBC Capital Markets                        [phone]

Sarah Wharry


Tristone:                                  [phone]

Simon Ashby-Rudd


Citigate Dewe Rogerson:                    [phone]

Media: Martin Jackson

Analysts: Kate Delahunty


or visit: www.gulfkeystone.com




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