Holding(s) in Company

Gulf Keystone Petroleum Ld
25 January 2005


                Gulf Keystone Petroleum Limited ("the Company")

                               Holding in Company


The Company has been notified by Aviva plc ("Aviva") that Morley Fund Management
Limited, a subsidiary of Aviva, that it is interested in 7,617,798 common shares
of US$0.01 each ("Common Shares"), representing 3.00 per cent. of the Company's
issued Common Share capital.

The above interest is held as follows;

Registered Holder                                                   Number of
                                                                       Shares

BNY Norwich Union Nominees Ltd                                       1,345,938
Chase GA Group Nominees Ltd                                          4,391,342
CUIM Nominee Ltd                                                     1,880,518


25 January 2005




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