22nd Jan 2008 11:27
Premier Oil PLC22 January 2008 Form TR-1 with annex. FSA Version 2.1 updated April 2007 For filings with the FSA include the annex For filings with issuer exclude the annex TR-1: Notifications of Major Interests in Shares 1. Identity of the issuer or the underlying issuer of Premier Oil plcexisting shares to which voting rights are attached: 2. Reason for notification (yes/no) Yes An acquisition or disposal of voting rights No An acquisition or disposal of financial instruments which may result in the acquisitionof shares already issued to which voting rights are attached No An event changing the breakdown of voting rights No Other (please specify): Ameriprise Financial, Inc. and its group 3. Full name of person(s) subject to notificationobligation: See additional information under13. 4. Full name of shareholder(s) (if different from3): 18/01/08 5. Date of transaction (and date on which thethreshold is crossed or reached if different): 21/01/08 6. Date on which issuer notified: Above 5% 7. Threshold(s) that is/are crossed or reached: 8: Notified DetailsA: Voting rights attached to shares Class/type of Situation previous to the Resulting situation after the triggering transactionshares triggering transaction Number of Number of voting Number of Number of voting rights Percentage of voting rightsIf possible use shares rights sharesISIN code Direct Indirect Direct IndirectGB0033560011 N/A N/A 4,235,496 64,500 4,170,996 0.079% 5.080% B: Financial Instruments Resulting situation after the triggering transaction Type of financial Expiration date Exercise/ conversion No. of voting rights Percentage of votinginstrument period/date that may be acquired rights (if the instrument exercised/converted) Total (A+B) Number of voting rights Percentage of voting rights4,235,496 5.159% 9. Chain of controlled undertakings through which the voting rights and /or the financial instruments are effectivelyheld, if applicable:Ameriprise Financial, Inc., which controls the voting rights of Threadneedle Asset Management Holdings Ltd, which controls the voting rights of Threadneedle Asset Management Ltd, Threadneedle International Ltd and Threadneedle Pensions Ltd. Proxy Voting: 10. Name of proxy holder: N/A 11. Number of voting rights proxy holder will cease N/Ato hold: 12. Date on which proxy holder will cease to hold N/Avoting rights: 13. Additional information: Registered Owner BNY (OCS) Nominees Ltd A/c 219064 71,858 Littledown Nominees Ltd A/c 34789 51,700 Littledown Nominees Ltd A/c 5577 55,600 Littledown Nominees Ltd A/c 5576 806,000 Littledown Nominees Ltd A/c 7197 64,500 Littledown Nominees Ltd A/c 10479 2,790 Littledown Nominees Ltd A/c 7203 42,900 Littledown Nominees Ltd A/c 7205 260,310 Littledown Nominees Ltd A/c 2891 1,095,203 Littledown Nominees Ltd A/c 21688 89,865 Littledown Nominees Ltd A/c 7207 337,568 Littledown Nominees Ltd A/c 7199 23,917 Littledown Nominees Ltd A/c 10491 828,284 Littledown Nominees Ltd A/c 10488 275,000 Littledown Nominees Ltd A/c 10490 170,000 Littledown Nominees Ltd A/c 31348 43,501 Littledown Nominees Ltd A/c 21667 16,500 14 Contact name: Company Secretary, Threadneedle group 15. Contact telephone name: 0207 464 5000 For notes on how to complete form TR-1 please see the FSA website. This information is provided by RNS The company news service from the London Stock ExchangeRelated Shares:
PMO.L