Holding(s) in Company

RNS Number:1818E
MedOil PLC
20 September 2007

TR-1:

NOTIFICATION OF MAJOR INTERESTS IN SHARES

1. Identity of the issuer or the underlying issuer of existing shares to which
voting rights are attached:

medOil plc

2. Reason for the notification (please state Yes/No):

An acquisition or disposal of voting rights: Yes

An acquisition or disposal of financial instruments which may result in the
acquisition of shares already issued to which voting rights are attached: No

An event changing the breakdown of voting rights: No

Other (please specify): No

3. Full name of person(s) subject to the notification obligation:

Capricorn Petroleum Limited (a subsidiary of Cairn Energy PLC)

4. Full name of shareholder(s) (if different from 3):

N/A

5. Date of the transaction (and date on which the threshold is crossed or
reached if different):

19 September 2007

6. Date on which issuer notified:

19 September 2007

7. Threshold(s) that is/are crossed or reached:

Above 15% threshold

8. Notified details:

A: Voting rights attached to shares

Class/type of shares if possible Situation previous to the triggering transaction
using the ISIN CODE
Number of Shares Number of Voting Rights
Ordinary Shares - -

GB00B04M7K05

Resulting situation after the triggering transaction

Class/type of shares if Number of Shares Number of Voting Rights % of Voting Rights
possible using the ISIN CODE
Direct Indirect Direct Indirect

Ordinary Shares 8,119,000 8,119,000 - 15.020% -

GB00B04M7K05

B: Financial Instruments

Resulting situation after the triggering transaction

Type of Expiration Date Exercise/Conversion Period Number of Voting Rights that % of Voting
financial / Date may be acquired if the
instrument instrument is exercised/ Rights
converted.

N/A N/A N/A N/A N/A

Total (A+B)

Number of Voting Rights % of Voting Rights

8,119,000 15.020%

9. Chain of controlled undertakings through which the voting rights and/or the
financial instruments are effectively held, if applicable

N/A

Proxy Voting:

10. Name of the proxy holder:

N/A

11. Number of voting rights proxy holder will cease to hold:

N/A

12. Date on which proxy holder will cease to hold voting rights: