Annual Information Update

Cairn Energy PLC
23 April 2007


FOR IMMEDIATE RELEASE                                       23 April 2007


                  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 2007.

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time become, out of date, due to  changing circumstances.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

24 April 2006   Notification of Shareholding - Fidelity
26 April 2006   Director/PDMR Shareholding
26 April 2006   S329 Companies Act 1985 Notification
28 April 2006   Block Listing Interim Review
2 May 2006      Notification of Shareholding - Merrill Lynch
18 May 2006     Notification of Shareholding - Deutsche Bank
23 May 2006     Notification of Shareholding - Merrill Lynch
30 May 2006     Approval of Field Development Plans
6 June 2006     Notification of Shareholding - Legal & General
19 June 2006    Notification of Shareholding - Merrill Lynch
20 June 2006    Directorate Change - Finance Director
26 June 2006    Notification of Shareholding - Fidelity
3 July 2006     Pre-Close Operational and Trading Update
2 August 2006   Notification of Shareholding - Fidelity
11 August 2006  Notification of Shareholding - Legal & General
18 August 2006  Notification of Shareholding - Fidelity
5 September     Interim Results
2006
14 September    Notification of Shareholding - Aviva
2006
25 September    Notification of Shareholding - Fidelity
2006
12 October 2006 Filing of Cairn India Limited Draft Red Herring Prospectus
12 October 2006 Notification of Shareholding - Aviva
13 October 2006 Director/PDMR Shareholding
17 October 2006 Change of Adviser - Appointment of Corporate Broker
1 November 2006 Proposed Flotation of Cairn India Limited
1 November 2006 Changes to Board of Directors
1 November 2006 Block Listing Interim Review
6 November 2006 Notification of Shareholding - Fidelity
17 November     Voting Results of Extraordinary General Meeting
2006
23 November     US$822 Million Pre-flotation Private Placing of Cairn India
2006            Shares
27 November     Flotation Price Range and Filing of Cairn India Limited Red
2006            Herring Prospectus
28 November     Notification of Shareholding - Merrill Lynch
2006
4 December 2006 Notification of Shareholding - Zurich
4 December 2006 Notification of Shareholding - Fidelity
6 December 2006 Notification of Shareholding - Fidelity
11 December     Notification of Shareholding - Merrill Lynch
2006
16 December     Pricing of Cairn India Limited Flotation
2006
21 December     Total Voting Rights
2006
22 December     Filing of Cairn India Limited Prospectus
2006
2 January 2007  Allotment of Cairn India Limited Shares
9 January 2007  Commencement of Trading of Cairn India Limited Shares
9 January 207   Notification of Shareholding - Fidelity
16 January 207  Notification of Shareholding - Legal & General
18 January 2007 Total Voting Rights
19 January 207  Notice of Results
22 January 2007 Notification of Shareholding - Fidelity
22 January 2007 Notification of Shareholding - Legal & General
23 January 2007 Notification of Shareholding - Baillie Gifford
29 January 207  Operational Update
31 January 2007 Total Voting Rights
1 February 2007 Notification of Shareholding - Halbis Capital
6 February 2007 Notification of Shareholding - Legal & General
7 February 2007 Cairn India Limited Stabilisation Period Ends
9 February 2007 Further Exploration Acreage for Cairn India in NELP VI
20 February     Cairn India Appointment of Chief Financial Officer
2007
27 February     £481 Million Return of Cash to Shareholders
2007
28 February     Total Voting Rights
2007
8 March 2007    Notification of Shareholding - F&C Asset Management
14 March 2007   Notification of Shareholding - Halbis Capital
20 March 2007   Notification of Shareholding - Legal & General
21 March 2007   Notification of Shareholding - Legal & General
22 March 2007   Voting Results of Extraordinary General Meeting
26 March 2007   Listing of New Ordinary Shares
27 March 2007   Preliminary Results
28 March 2007   Notification of Shareholding - Legal & General
29 March 2007   Director/PDMR Shareholding
30 March 2007   Total Voting Rights
2 April 2007    Notification of Shareholding - Lazard
4 April 2007    Return of Cash and Results of B Share Scheme Elections
4 April 2007    Initial Purchase Offer for B Shares (released by Hoare Govett)
5 April 2007    Transaction in Own Shares - Initial Purchase of B Shares
5 April 2007    Notification of Shareholding - Legal & General
10 April 2007   Future Purchase Offer for B Shares (released by Hoare Govett)
11 April 2007   Transaction in Own Shares - Purchase of Retained B Shares

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

20 April 2006     Form 88(2) Return of Allotment of Shares (2)
20 April 2006     Resolutions passed as Special Business at the Company's AGM
21 April 2006     Form 88(2) Return of Allotment of Shares
24 April 2006     Form 88(2) Return of Allotment of Shares (2)
26 April 2006     Form 88(2) Return of Allotment of Shares
27 April 2006     Form 88(2) Return of Allotment of Shares
4 May 2006        Form 88(2) Return of Allotment of Shares
5 May 2006        Form 88(2) Return of Allotment of Shares
9 May 2006        Form 288c Change of Particulars for Director
18 May 2006       Form 88(2) Return of Allotment of Shares
2 June 2006       Form 88(2) Return of Allotment of Shares
12 June 2006      2005 Annual Report and Accounts
26 June 2006      Form 88(2) Return of Allotment of Shares
3 July 2006       Form 88(2) Return of Allotment of Shares (2)
4 July 2006       Form 88(2) Return of Allotment of Shares (2)
5 July 2006       Form 88(2) Return of Allotment of Shares
6 July 2006       Form 88(2) Return of Allotment of Shares
7 July 2006       Form 88(2) Return of Allotment of Shares
10 July 2006      Form 88(2) Return of Allotment of Shares
12 July 2006      Form 88(2) Return of Allotment of Shares
21 July 2006      Form 88(2) Return of Allotment of Shares
31 July 2006      Form 88(2) Return of Allotment of Shares
9 August 2006     Form 88(2) Return of Allotment of Shares
21 August 2006    Form 88(2) Return of Allotment of Shares
22 August 2006    Form 88(2) Return of Allotment of Shares
25 August 2006    Form 88(2) Return of Allotment of Shares
30 August 2006    Form 88(2) Return of Allotment of Shares
5 September 2006  Form 88(2) Return of Allotment of Shares
22 November 2006  Form 288a Appointment of Director (2)
22 November 2006  Form 288b Resignation of Director
22 November 2006  Form 88(2) Return of Allotment of Shares
23 November 2006  Form 88(2) Return of Allotment of Shares
27 November 2006  Form 88(2) Return of Allotment of Shares
30 November 2006  Form 88(2) Return of Allotment of Shares
4 December 2006   Form 88(2) Return of Allotment of Shares
6 December 2006   Form 88(2) Return of Allotment of Shares
14 December 2006  Form 88(2) Return of Allotment of Shares
15 December 2006  Form 88(2) Return of Allotment of Shares
18 December 2006  Form 88(2) Return of Allotment of Shares
3 January 2007    Form 88(2) Return of Allotment of Shares
5 January 2007    Form 88(2) Return of Allotment of Shares
12 January 2007   Form 88(2) Return of Allotment of Shares
23 January 2007   Form 88(2) Return of Allotment of Shares
1 February 2007   Form 88(2) Return of Allotment of Shares
6 February 2007   Form 363s Annual Return
13 February 2007  Form 88(2) Return of Allotment of Shares
2 March 2007      Form 88(2) Return of Allotment of Shares
6 March 2007      Form 88(2) Return of Allotment of Shares
9 March 2007      Form 88(2) Return of Allotment of Shares
12 March 2007     Form 88(2) Return of Allotment of Shares
14 March 2007     Form 88(2) Return of Allotment of Shares
15 March 2007     Form 88(2) Return of Allotment of Shares
16 March 2007     Form 88(2) Return of Allotment of Shares
19 March 2007     Form 88(2) Return of Allotment of Shares
20 March 2007     Form 88(2) Return of Allotment of Shares
21 March 2007     Form 88(2) Return of Allotment of Shares
22 March 2007     Form 88(2) Return of Allotment of Shares
22 March 2007     Resolutions passed as Special Business at Company's AGM
22 March 2007     Form 122 Sub-division and Consolidation of Share Capital
23 March 2007     Form 88(2) Return of Allotment of Shares
27 March 2007     Form 88(2) Return of Allotment of Shares
28 March 2007     Form 88(2) Return of Allotment of Shares
29 March 2007     Form 88(2) Return of Allotment of Shares
30 March 2007     Form 88(2) Return of Allotment of Shares
2 April 2007      Form 88(2) Return of Allotment of Shares
4 April 2007      Form 88(2) Return of Allotment of Shares
5 April 2007      Form 88(2) Return of Allotment of Shares
5 April 2007      Interim Report and Accounts
10 April 2007     Form 88(2) Return of Allotment of Shares
11 April 2007     Form 88(2) Return of Allotment of Shares
13 April 2007     Form 88(2) Return of Allotment of Shares
16 April 2007     Form 88(2) Return of Allotment of Shares
18 April 2007     Form 88(2) Return of Allotment of Shares
20 April 2007     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

18         2006 Interim Report and Accounts
September
2006
31 October Circular re Proposed Flotation Of Cairn India, Approval Of New Share
2006       Incentive Arrangements and Notice of Extraordinary General Meeting.
27         Circular re Proposed Return of Cash to Shareholders, Capital
February   Reorganisation and Notice of Extraordinary General Meeting
2007
17 April   2006 Annual Report and Accounts
2007
17 April   2006 Corporate Responsibility Report
2007

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



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