RNS Number:5528T
Premier Oil PLC
22 December 2003

                           SCHEDULE 10
 
             NOTIFICATION OF MAJOR INTERESTS IN SHARES


1)   NAME OF COMPANY

     PREMIER OIL PLC


2)   NAME OF SHAREHOLDER HAVING A MAJOR INTEREST

     LANSDOWNE PARTNERS LIMITED PARTNERSHIP


3)   Please state whether notification indicates that it is in respect of 
     holding of the Shareholder named in 2 above or in respect of a 
     non-beneficial interest or in the case of an individual holder if it is a
     holding of that person's spouse or children under the age of 18

     2. ABOVE


4)   Name of the registered holder(s) and, if more than one holder, the 
     number of shares held by each of them.

     AS 2. ABOVE


5)   Number of shares/amount of stock acquired.

     UNDISCLOSED


6)   Percentage of issued Class

     UNDISCLOSED


7)   Number of shares/amount of stock disposed

     N/A


8)   Percentage of issued Class

     N/A


9)   Class of security

     ORDINARY


10)  Date of transaction

     UNDISCLOSED


11)  Date company informed

     22.12.03


12)  Total holding following this notification

     3,985,029
               

13)  Total percentage holding of issued class following this notification

     4.8780%


14)  Any additional information

     SEE BELOW


15)  Name of contact and telephone number for queries

     LISA PARSONS
     020 7730 1111


16)  Name and signature of authorised company official responsible for 
     making this notification

     MR S C HUDDLE


     Date of Notification

     22 DECEMBER 2003


Letter to Premier Oil Plc
Dated 19 December 2003

I am writing to advise you that as a result of a recent purchase of shares, 
Lansdowne Partners Limited Partnership, on behalf of client funds that it 
manages, controls 3,985,029 shares of Premier Oil Plc (sedol number 3356001). 
This represents 5.06% of the shares in issue.

Letter from Stuart Roden
            Director, Lansdowne Partners Limited 


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

END

HOLBXBDDUBDGGXD