Annual Information Update

Cairn Energy PLC
21 April 2008


FOR IMMEDIATE RELEASE


                                                                   21 April 2008


                  CAIRN ENERGY PLC ('Cairn' or the 'Company')


                           Annual Information Update

In accordance with Prospectus Rule 5.2 the following information has been published or made available to the public 
over the 12 months to 20 April 2008.

This information was published on the dates shown and may now be, or may at any time become, out of date, due to 
changing circumstances.

1. Announcements made via a Regulatory Information Service

Date              Announcement
23 April 2007     Annual Information Update
23 April 2007     2006 Annual Report and Accounts
25 April 2007     Notification of Shareholding - Baillie Gifford & Co
27 April 2007     Statement regarding Cairn India Q1 2007 financial results
30 April 2007     Total Voting Rights
1 May 2007        Notification of Shareholding - Baillie Gifford & Co
10 May 2007       Rajasthan Block Northern Appraisal Area
                  Extension, Discovery and Further Drilling Plans
16 May 2007       Notification of Shareholding- Halbis Capital Management (Hong Kong) Limited
17 May 2007       Reporting Dates
17 May 2007       Voting Results of Annual General Meeting - amendment
18 May 2007       Transaction in Own Shares - Purchase for Cancellation of Deferred Shares
18 May 2007       Director/PDMR Shareholding
18 May 2007       Special Business at Annual General Meeting
31 May 2007       Total Voting Rights
14 June 2007      Director/PDMR Shareholding
29 June 2007      Total Voting Rights
24 July 2007      Notification of Shareholding - HSBC Investments (Singapore) Limited
30 July 2007      Statement regarding Cairn India Q2 2007 financial results
31 July 2007      Total Voting Rights
21 August 2007    Notification of Shareholding - HSBC Holdings Plc
21 August 2007    Notification of Shareholding - BlackRock, Inc.
31 August 2007    Total Voting Rights
7 September 2007  Dyas BV Acquires 10% Stake in Capricorn
7 September 2007  Offer for Plectrum Petroleum
7 September 2007  Three Transactions by Capricorn Energy Limited
7 September 2007  Offer for medOil
7 September 2007  Notification of Shareholding - BlackRock, Inc.
7 September 2007  Rule 8.1 - (medOil)
10 September 2007 Rule 8.1 - (Plectrum)
11 September 2007 Rule 8.1 - (medOil)
11 September 2007 Interim Results Announcement
11 September 2007 Notification of Shareholding in Plectrum Petroleum - Capricorn Oil & Gas Limited
11 September 2007 Notification of Shareholding in medOil - Capricorn Petroleum Limited
11 September 2007 Rule 8.1 - (medOil)
12 September 2007 Notification of Shareholding in medOil - Capricorn Petroleum Limited
14 September 2007 Capricorn Oil & Gas Limited Offer for Plectrum Petroleum - Correction of 2.5 Announcement
18 September 2007 Capricorn Oil & Gas Limited Offer for Plectrum Petroleum - Notification of Posting of the Offer 
Document
18 September 2007 Capricorn Petroleum Limited Offer for medOil - Notification of Posting of the Offer Document
19 September 2007 Notification of Shareholding - BlackRock, Inc.
20 September 2007 Rule 8.1 - (medOil)
20 September 2007 Notification of Shareholding in medOil - Capricorn Petroleum Limited
28 September 2007 Total Voting Rights
2 October 2007    Director/PDMR Shareholding
10 October 2007   Recommended Offer for Plectrum Petroleum declared unconditional in all respects
10 October 2007   Recommended Offer for medOil declared unconditional in all respects
25 October 2007   Statement regarding Cairn India Q3 2007 financial results
26 October 2007   Part Disposal of Bangladesh Interest to Santos
31 October 2007   Total Voting Rights
13 November 2007  Notice of Cancellation of Trading of Plectrum Petroleum securities on AIM
28 November 2007  Block Listing Six Monthly Return
30 November 2007  Total Voting Rights
12 December 2007  Notification of Shareholding - BlackRock, Inc.
12 December 2007  Notification of Shareholding - Baillie Gifford & Co
24 December 2007  Notification of Operational Update and Preliminary Results
28 December 2007  Total Voting Rights
3 January 2008    Notification of Shareholding - Baillie Gifford & Co
4 January 2008    Bangladesh Drilling Programme Update
8 January 2008    Notification of Shareholding - BlackRock, Inc.
10 January 2008   Capricorn Acquires an Interest in Six Blocks Offshore West Greenland
15 January 2008   Notification of Shareholding - Baillie Gifford & Co
15 January 2008   Notification of Shareholding - HSBC Holdings Plc
16 January 2008   Operational Update - Revised Date
22 January 2008   Notification of Shareholding - HSBC Holdings Plc
31 January 2008   Operational Update
31 January 2008   Total Voting Rights
6 February 2008   Preliminary Results Revised Date
11 February 2008  Notification of Shareholding - Baillie Gifford & Co
25 February 2008  Notification of Shareholding - BlackRock, Inc.
29 February 2008  Notification of Shareholding - HSBC Holdings Plc
29 February 2008  Total Voting Rights
3 March 2008      Notification of Shareholding - BlackRock, Inc.
17 March 2008     Statement regarding Cairn India - $625m private placement
25 March 2008     Notification of Shareholding - BlackRock, Inc.
27 March 2008     Block Listing Six Monthly Return
31 March 2008     Total Voting Rights
31 March 2008     Preliminary Results Announcement
3 April 2008      Notification of Interim Results
4 April 2008      Notification of Shareholding - HSBC Holdings Plc
4 April 2008      Director/PDMR Shareholding

Details of all regulatory announcements for Cairn can be found on the London Stock Exchange website at 
www.londonstockexchange.com/en-gb/

2. Documents filed with Companies House

Date                Document
30 April 2007       Form 88(2) Return of Allotment of Shares
30 April 2007       Form 88(2) Return of Allotment of Shares
30 April 2007       Form 88(2) Return of Allotment of Shares
2 May 2007          Form 88(2) Return of Allotment of Shares
3 May 2007          Form 88(2) Return of Allotment of Shares
4 May 2007          Form 169 Return by a company purchasing its own shares
9 May 2007          Form 88(2) Return of Allotment of Shares
9 May 2007          Form 88(2) Return of Allotment of Shares
14 May 2007         Form 88(2) Return of Allotment of Shares
16 May 2007         Form 88(2) Return of Allotment of Shares
16 May 2007         Form 88(2) Return of Allotment of Shares
22 May 2007         New Articles of Association of the Company
23 May 2007         2006 Annual Report and Accounts
29 May 2007         Form 88(2) Return of Allotment of Shares
29 May 2007         Form 88(2) Return of Allotment of Shares
29 May 2007         Form 88(2) Return of Allotment of Shares
29 May 2007         Form 122 Notice of Sub-Division and Consolidation
31 May 2007         Resolutions passed as Special Business at Company's AGM
31 May 2007         Form 169 Return by a company purchasing its own shares
5 June 2007         Form 88(2) Return of Allotment of Shares
5 June 2007         Form 88(2) Return of Allotment of Shares
13 June 2007        New Memorandum of Association of the Company
26 June 2007        Form 88(2) Return of Allotment of Shares
23 July 2007        Form 88(2) Return of Allotment of Shares
6 August 2007       Form 288c Change of Particulars for Director
6 August 2007       Form 288c Change of Particulars for Director
14 August 2007      Form 88(2) Return of Allotment of Shares
14 September 2007   Form 88(2) Return of Allotment of Shares
14 September 2007   Form 88(2) Return of Allotment of Shares
9 October 2007      Form 88(2) Return of Allotment of Shares
10 October 2007     Form 88(2) Return of Allotment of Shares
5 November 2007     Form 88(2) Return of Allotment of Shares
5 November 2007     Form 88(2) Return of Allotment of Shares
12 December 2007    Form 88(2) Return of Allotment of Shares
29 December 2007    Form 88(2) Return of Allotment of Shares
29 December 2007    Form 88(2) Return of Allotment of Shares
18 January 2008     Form 88(2) Return of Allotment of Shares
18 January 2008     Form 88(2) Return of Allotment of Shares
5 February 2008     Form 363s Annual Return
18 February 2008    Form 88(2) Return of Allotment of Shares
25 March 2008       Form 88(2) Return of Allotment of Shares

The above documents can be found on the Companies House website at www.companieshouse.gov.uk//index.shtml

3. Documents sent to shareholders

Date                        Document
28 September 2007           2007 Interim Report and Accounts

The above document can be found on Cairn's website at www.cairn-energy.plc.uk




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            The company news service from the London Stock Exchange