Holding(s) in Company

Cairn Energy PLC
18 August 2006


FOR IMMEDIATE RELEASE
                                                                18 August 2006


                         Cairn Energy PLC ('Cairn')

   Notification of Shareholding - Companies Act 1985 ss.198-202 (as amended)



On 18 August 2006, Cairn was notified by FMR Corp. and its direct and indirect
subsidiaries and by Fidelity  International Limited and its direct and indirect
subsidiaries, both being non-beneficial holders, that they had an  interest in
10,940,464 ordinary shares of 10 pence each in Cairn, representing 6.83% of
Cairn's current issued ordinary  share capital.

The registered holders to which this notification relates and the number of
shares held by those registered holders as at 18 August 2006 are as follows:-


        REGISTERED HOLDER                             NUMBER OF       PERCENTAGE
                                                         SHARES

JP Morgan, Bournemouth                                  657,616
Northern Trust London                                   363,907
State Street Bank and Trust Co LNDN                     184,250
HSBC Bank PLC                                            76,500
Bank of New York Brussels                                74,400
Mellon Bank                                              66,100
JP Morgan, Bournemouth                                4,137,491
Brown Bros Harriman Ltd Lux                           4,783,820
JP Morgan, Bournemouth                                  144,100
Bank of New York Brussels                                19,500
Northern Trust London                                    18,430
JP Morgan, Bournemouth                                  280,700
Bank of New York Europe LDN                             133,650

TOTAL                                                10,940,464            6.83%


The notifiable interests also comprise the notifiable interest of Mr Edward C.
Johnson 3rd, a principal shareholder of  FMR Corp. and Fidelity International
Limited.




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