Holding in company Lonmin Plc (Incorporated in England and Wales) (Registered in the Republic of South Africa under registration number 1969/000015/10) JSE code: LON Issuer Code: LOLMI ISIN: GB0031192486 ("Lonmin") HOLDING IN COMPANY 19 September 2012 TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES(i) 1. Identity of the issuer or the underlying issuer of existing LONMIN PLC shares to which voting rights are attached: (ii) 2 Reason for the notification (please tick the appropriate box or boxes): An acquisition or disposal of voting rights X An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments An event changing the breakdown of voting rights Other (please specify): 3. Full name of person(s) subject to the Old Mutual Investment Group (South Africa) (Pty) Ltd notification obligation: (iii) Old Mutual Investment Group (South Africa) (Pty) Ltd 4. Full name of shareholder(s) (if different from Old Mutual Life Assurance Company South Africa Ltd 3.):(iv) 5. Date of the transaction and date on which the 18/09/12 threshold is crossed or reached: (v) 6. Date on which issuer notified: 19/09/12 7. Threshold(s) that is/are crossed or reached: (vi), 9% to 8% (vii) 8. Notified details: A: Voting rights attached to shares (viii), (ix) Class/type of Situation previous to the Resulting situation after the triggering transaction shares triggering transaction <9% if possible using Number of Number of Number of Number of voting % of voting rights (x) the ISIN CODE Shares Voting shares rights Rights Direct Indirect Direct Direct Indirect (xi) (xii) GB0031192486 18,670,841 18,670,841 17,894,832 8.83% B: Qualifying Financial Instruments Resulting situation after the triggering transaction Type of financial Expiration Exercise/ Conversion Number of voting rights % of voting rights instrument date (xiii) Period (xiv) that may be acquired if the instrument is exercised/ converted. C: Financial Instruments with similar economic effect to Qualifying Financial Instruments (xv), (xvi) Resulting situation after the triggering transaction Type of financial Exercise Expiration Exercise/ Number of voting rights % of voting rights instrument price date (xvii) Conversion instrument refers to (xix), (xx) period (xviii) Nominal Delta Total (A+B+C) Number of voting rights Percentage of voting rights 17,894,832 8.83% 9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable: (xxi) Proxy Voting: 10. Name of the proxy holder: 11. Number of voting rights proxy holder will cease to hold: 12. Date on which proxy holder will cease to hold voting rights: 13. Additional information: 14. Contact name: Seema Kamboj 15. Contact telephone number: 020 7201 6053 Date: 19/09/2012 04:48:00 Produced by the JSE SENS Department. The SENS service is an information dissemination service administered by the JSE Limited ('JSE'). The JSE does not, whether expressly, tacitly or implicitly, represent, warrant or in any way guarantee the truth, accuracy or completeness of the information published on SENS. The JSE, their officers, employees and agents accept no liability for (or in respect of) any direct, indirect, incidental or consequential loss or damage of any kind or nature, howsoever arising, from the use of SENS or the use of, or reliance on, information disseminated through SENS.