RNS Number:1551E
Cairn Energy PLC
20 September 2007


                                                                        FORM 8.1

          DEALINGS BY OFFERORS, OFFEREE COMPANIES OR THEIR ASSOCIATES
                  FOR THEMSELVES OR FOR DISCRETIONARY CLIENTS
                 (Rules 8.1(a) and (b)(i) of the Takeover Code)



1.         KEY INFORMATION

Name of person dealing (Note 1)              Capricorn Petroleum Limited 
                                             (a subsidiary of Cairn Energy plc),

Company dealt in                             medOil plc

Class of relevant security to which the      ORD GBP 0.01
dealings being disclosed relate (Note 2)

Date of dealing                              19/09/07



2.         INTERESTS, SHORT POSITIONS AND RIGHTS TO SUBSCRIBE

(a)        Interests and short positions (following dealing) in the class of
relevant security dealt in (Note 3)


                                                             Long                              Short
                                               Number                           Number
                                                           (%)                              (%)

(1) Relevant securities                        8,119,000   15.020%

(2) Derivatives (other than options)

(3) Options and agreements to purchase/sell

Total                                          8,119,000   15.020%



(b)       Interests and short positions in relevant securities of the company,
other than the class dealt in (Note 3)


Class of relevant security:                                  Long                              Short
                                               Number                           Number
                                                          (%)                              (%)

(1) Relevant securities

(2) Derivatives (other than options)

(3) Options and agreements to purchase/sell

Total



(c)        Rights to subscribe (Note 3)

Class of relevant security:                    Details





3.         DEALINGS (Note 4)

(a)        Purchases and sales

Purchase/sale                          Number of securities                  Price per unit (Note 5)

Purchase                               250,000                               23p



(b)       Derivatives transactions (other than options)

Product name,         Long/short (Note 6)       Number of securities (Note 7)        Price per unit (Note 5)
e.g. CFD






(c)        Options transactions in respect of existing securities

(i)         Writing, selling, purchasing or varying

Product   Writing,       Number of    Exercise  Type, e.g.  Expiry  Option money
name,     selling,       securities   price     American,   date    paid/
e.g.      purchasing,    to which               European            received                
call      varying etc.   the option             etc.                per unit  
option                   relates                                    (Note 5) 
                         (Note 7)





(ii)        Exercising

Product name, e.g. call option         Number of securities                  Exercise price per unit (Note 5)




(d)       Other dealings (including new securities) (Note 4)

Nature of transaction (Note 8)         Details                               Price per unit (if applicable) (Note 5)



4.         OTHER INFORMATION

Agreements, arrangements or understandings relating to options or derivatives

Full details of any agreement, arrangement or understanding between the person disclosing and any other person relating
to the voting rights of any relevant securities under any option referred to on this form or relating to the voting
rights or future acquisition or disposal of any relevant securities to which any derivative referred to on this form is
referenced.  If none, this should be stated.



Is a Supplemental Form 8 attached? (Note 9)                       NO


Date of disclosure                                                19/09/07

Contact name                                                      Oliver Griffiths

Telephone number                                                  0207 618 3676

Name of offeree/offeror with which associated                     Capricorn Petroleum Limited

Specify category and nature of associate status (Note 10)         Connected Advisor



Notes

The Notes on Form 8.1 can be viewed on the Takeover Panel's website at
www.thetakeoverpanel.org.uk



                      This information is provided by RNS
            The company news service from the London Stock Exchange
END

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